Difference between revisions of "Displaying images"

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<div id="DefaultView"></div>
 
== Displaying images using the default view ==
 
== Displaying images using the default view ==
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In the ''default view'', MIPAV displays the images in a dataset one at a time in an image window ([[Displaying images using the default view|Figure 17]]). This window can display datasets of any dimension.<br />
+
In the ''default view'', MIPAV displays the images in a dataset one at a time in an image window. This window can display datasets of any dimension.<br />
  
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'''Figure 17. Images open in the default image windows''' <br />
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''' Images open in the default image windows''' <br />
  
 
{|
 
{|
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|}
 
|}
  
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=== Displaying images using the lightbox view ===
 
  
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The ''lightbox view'' is similar to the default view, except that all images in the dataset appear in one window at the same time (Figure 18).<br />
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== Selecting views ==
−
To display images in the lightbox view'''
+
 
−
1 Open an image file. The image appears in an image window.<br />
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'''A view''' refers to the way an image file is displayed. A view indicates how many images are shown at one time and whether images are advanced manually or automatically. Depending on the view, the size and shape of the image window in which an image is displayed can vary.  
−
2 Select the image window. Do one of the following in the MIPAV window:<br />
+
 
−
Click the View Light Box icon;<br />
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This page explains how to display image files in the [[#DefaultView |default]], [[#LightboxView| lightbox]], and [[#CineView| cine]] view, however, MIPAV allows you to display images using other views also.  
−
Select Image &gt; Views &gt; Light box.<br />
+
 
−
The image now appears in a lightbox view.<br />
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=== MIPAV views ===
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3 Select Options &gt; Settings in the lightbox view window to adjust the size and shape of the window. The Lightbox Settings dialog box (Figure 18) opens.<br />
+
−
4 In the dialog box, indicate the number of rows and columns, the grid size, frame border size, color settings, and the magnification. For more information on these attributes, see the ''MIPAV User's Guide'', "Visualizing Images", "Adjusting the lightbox view".<br />
+
−
5 Click Close when complete. The image appears in the lightbox view, see Figure 18.<br />
+
  
 
{| border="1" cellpadding="5"
 
{| border="1" cellpadding="5"
−
|+ '''Figure 18. An image shown in the lightbox view and the Lightbox Settings dialog box<br />'''
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|+
 
|-
 
|-
−
|[[Image:QuickStart_LightBox.jpg]]
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|
 +
<div class="CellBody">Icon</div>
 +
|
 +
<div class="CellBody">View</div>
 +
|
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<div class="CellBody">Icon</div>
 +
|
 +
<div class="CellBody">View</div>
 +
|-
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|[[Image:Magnify11Ico.jpg]]
 +
|Default
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|[[Image:VolumeRendererGPUIco.jpg]]
 +
|Surface plotter
 +
|-
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|[[Image:CineViewIco.jpg]]
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|Animate
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|[[Image:VolumeRendererIco.jpg]]
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|Volume renderer
 +
|-
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|[[Image:CineViewIco.jpg]]
 +
|Cine (movie)
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|[[Image:TriPlanarIco.jpg]]
 +
|Tri-planar
 +
|-
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|[[Image:LightBoxIco.jpg]]
 +
|Lightbox
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|[[Image:TriPlanarViewIco.jpg]]<br />
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|Tri-planar dual
 +
|-
 +
|[[Image:LinkImagesIco.jpg]]<br />
 +
|Link to another image
 +
|
 +
[[Image:VolumeTriPlanarIcoa.jpg]]
 +
|Volume Tri-planar
 
|}
 
|}
  
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<br />
 
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''To magnify a portion of the image in the lightbox, <br />'''
 
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click Magnify Region and move the pointer to the image section to be magnified. Click Default Mode when finished.
 
  
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Double-clicking an image in the lightbox view updates the 2D image frame for that image.
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<div id="LightboxView"></div>
 +
== Displaying images using the lightbox view ==
 +
[[File:QuickStart_LightBox.jpg|200px|thumb|left|An image shown in the lightbox view and the Lightbox Settings dialog box]]
  
−
=== Displaying images using the cine view ===
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The ''lightbox view'' is similar to [[#DefaultView| the default view]], except that all images in the dataset appear in one window at the same time.
−
When you view an image file in cine view, MIPAV automatically advances images one frame at a time. The effect is much like a film loop. <br />'''To display images in cine view'''<br />
+
−
1 Open an image file. The image appears in the default image window.<br />
+
−
2 Select Image &gt; Views &gt; Cine (Movie). The images in the image window are advanced automatically.<br />
+
  
−
== Adjusting magnification ==
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=== To display images in the lightbox view: ===
  
−
'''MIPAV''' allows you to magnify images from 1.5 to 32 times the size of the original image. Using the magnification tools, you can magnify or minify the entire image or just a portion of the image. Much like a traditional magnifying glass, the magnification box can also ''minify''-or reduce the level of magnification-a portion of the image.<br />
+
<ol>
 +
<li> Open an image file. The image appears in an image window.</li>
 +
<li> Select the image window. Do one of the following in the MIPAV window:</li>
 +
<ul>
 +
<li>Click the View Light Box icon;</li>
 +
<li>Select Image &gt; Views &gt; Light box.</li>
 +
<li>The image now appears in a lightbox view.</li>
 +
</ul>
 +
<li> Select Options &gt; Settings in the lightbox view window to adjust the size and shape of the window. The Lightbox Settings dialog box opens.</li>
 +
<li> In the dialog box, indicate the number of rows and columns, the grid size, frame border size, color settings, and the magnification. </li>
 +
<li>Click Close when complete. The image appears in the lightbox view.</li>
 +
</ol>
  
−
=== Changing the magnification level ===
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=== To magnify a portion of the image in the lightbox: ===
  
−
This section explains how to change the magnification level of the image using the icons on the Image toolbar in the MIPAV window.
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Click Magnify Region and move the pointer to the image section to be magnified. Click Default Mode when finished.
 +
Double-clicking an image in the lightbox view updates the 2D image frame for that image.
  
−
To learn how to adjust the magnification level using the Image toolbar, refer to
+
<div id="CineView"></div>
−
"Magnifying images" <br />"Reducing the magnification level"<br />"Restoring the original level of magnification" <br />"Magnifying regions within images"<br />
+
== Displaying images using the cine view ==
 +
When you view an image file in cine view, MIPAV automatically advances images one frame at a time. The effect is much like a film loop.
 +
 
 +
=== To display images in cine view ===
 +
<ol>
 +
<li>Open an image file. The image appears in the default image window.</li>
 +
<li>Select Image &gt; Views &gt; Cine (Movie). The images in the image window are advanced automatically.</li>
 +
</ol>
 +
 
 +
<div id="AdjustingMagnification"></div>
 +
== Adjusting magnification ==
  
−
To learn how to set the magnification level using the other methods, see volume 1 of the ''MIPAV User's Guide.''
+
MIPAV allows you to magnify images from 1.5 to 32 times the size of the original image. Using the magnification tools, you can magnify or minify the entire image or just a portion of the image. Much like a traditional magnifying glass, the magnification box can also ''minify''-or reduce the level of magnification-a portion of the image.<br />
  
 
==== Magnifying images ====
 
==== Magnifying images ====
  
−
To magnify an image, click the Magnify Image icon, and then click the image. Each time you click the Magnify Image icon and click the image, the image doubles in size. If an image is too large for the current window size, scroll bars appear, and you may need to manually adjust the size of the window.<br />
+
To magnify an image, click the Magnify Image icon, and then click the image. Each time you click the Magnify Image icon and click the image, the image doubles in size. If an image is too large for the current window size, scroll bars appear, and you may need to manually adjust the size of the window.
  
 
==== Reducing the magnification level ====
 
==== Reducing the magnification level ====
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To return the image to its original size or original level of magnification, click Original Magnification.<br />
 
To return the image to its original size or original level of magnification, click Original Magnification.<br />
  
−
==== Magnifying regions within images ====
+
<div id="MagnifyingRegions"></div>
−
[[Image:MagnificationRegionIco.jpg]] The Magnify Region icon allows you to view a square portion, or region, of the image at a specific magnification level. If you have loaded '''two images</font>''' into the same image window, the Window Region of Image B icon appears on the toolbar. Use this icon to view a region on the second image, or Image B.<br />'''To use the Magnify Region icon'''<br />
+
=== Magnifying regions within images ===
 +
[[Image:MagnificationRegionIco.jpg]] The Magnify Region icon allows you to view a square portion, or region, of the image at a specific magnification level. If you have loaded '''two images</font>''' into the same image window, the Window Region of Image B icon appears on the toolbar. Use this icon to view a region on the second image, or Image B.
  
−
1 Open an image.<br />
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[[File:MagnificationDialogBox.jpg|200px|thumb|left|The Magnification dialog box options]]
−
2 Click Magnify Region and move it over the image. <br />
+
−
As you move the mouse over the image, the Magnify Region icon displays a magnified square region in the image in a red box. The number at the left corner of the square is the magnification level. See also Figure 20.<br />You can change the size of the magnifying region to allow you to view larger or smaller regions of the image.<br /></font>
+
−
1 Right-click on the image while displaying a magnified region. The Magnification dialog box (Figure 19) opens.<br />
+
−
2 Type either a higher number for a larger region or a lower number for a smaller region in the Width box. Valid values range from 64.0 to 198.0.<br />
+
−
3 Click Apply. The size of the magnified region, or square, either increases or decreases in size.<br />
+
−
Changing the magnification level of the magnified region works similarly to changing the size of the magnified region.<br />
+
  
 +
==== To use Magnify Region ====
 +
<ol>
 +
<li> Open an image.</li>
 +
<li> Click Magnify Region and move it over the image. </li>
 +
As you move the mouse over the image, the Magnify Region icon displays a magnified square region in the image in a red box. The number at the left corner of the square is the magnification level. </li>
 +
<li>You can change the size of the magnifying region to allow you to view larger or smaller regions of the image.</li>
 +
<ul>
 +
<li> Right-click on the image while displaying a magnified region. The Magnification dialog box opens.</li>
 +
<li> Type either a higher number for a larger region or a lower number for a smaller region in the Width box. Valid values range from 64.0 to 198.0.</li>
 +
<li> Click Apply. The size of the magnified region, or square, either increases or decreases in size.</li>
 +
Changing the magnification level of the magnified region works similarly to changing the size of the magnified region.</li>
 +
</ul>
 +
</ol>
  
  
 
{| border="1" cellpadding="5"
 
{| border="1" cellpadding="5"
−
|+ '''Figure 19. Magnification dialog box options'''
+
|+ '''Magnification dialog box options'''
 
|-
 
|-
 
|
 
|
 
<div class="CellBody"><span style="font-style: normal; text-decoration: none; text-transform: none; vertical-align: baseline">'''<font color="#000000">Magnification</font>'''</span></div>
 
<div class="CellBody"><span style="font-style: normal; text-decoration: none; text-transform: none; vertical-align: baseline">'''<font color="#000000">Magnification</font>'''</span></div>
 
|Move the Magnification slide to the right to increase the magnification level or to the left to decrease the magnification level
 
|Move the Magnification slide to the right to increase the magnification level or to the left to decrease the magnification level
−
|[[Image:MagnificationDialogBox.jpg]]
 
 
|-
 
|-
 
|'''Display intensity values'''
 
|'''Display intensity values'''
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|-
 
|-
 
|'''Size'''
 
|'''Size'''
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|Type either a higher number for a larger region or a lower number for a smaller region in the Width box. Valid values range from 64.0 to 198.0.
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|Type either a higher number for a larger region or a lower number for a smaller region in the Width box. Valid values range from 64.0 to 198.0. '''Note:''' The larger size magnifying glass such as shown in B and C allows to inspect a larger region of the image.
 
|-
 
|-
 
|'''Apply'''
 
|'''Apply'''
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Tip: To review or compare a magnified region of the image with the same region at its original magnification, press Shift. To return to the Magnified view, release the key.
 
Tip: To review or compare a magnified region of the image with the same region at its original magnification, press Shift. To return to the Magnified view, release the key.
  
−
'''Figure 20. The larger size magnifying glass such as shown in B and C allows to inspect a larger region of the image''' <br />
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==== To change the magnification level ====
  
−
{|
+
1 Right-click on the image while displaying a magnified region. The Magnification dialog box opens.<br />
−
|-
+
−
|[[Image:QuickStart_MagnificationI4_75.jpg]]
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−
|[[Image:QuickStart_MagnificationI4_130.jpg]]
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−
|[[Image:QuickStart_MagnificationI8_75.jpg]]
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−
|-
+
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|A-the magnified region size is set to 75; the magnification level 4 is shown in the magnified region.
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−
|B -the magnified region size is set to 130; the magnification level 4 is shown in the magnified region.
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−
|C- the magnified region size is set to 130; the magnification level 8 is shown in the magnified region.
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−
|}
+
−
'''To change the magnification level'''<br />
+
−
 
+
−
1 Right-click on the image while displaying a magnified region. The Magnification dialog box (Figure 19) opens.<br />
+
 
2 Complete the dialog box, and then press Apply.<br />
 
2 Complete the dialog box, and then press Apply.<br />
 
3 The magnification level shown in the magnified region changes to the level you specified.<br />
 
3 The magnification level shown in the magnified region changes to the level you specified.<br />
  
 
==== Showing intensity values through the magnification glass ====
 
==== Showing intensity values through the magnification glass ====
−
The Display intensity values check box on the Magnification dialog box allows you to display the intensity values within a magnified region of the image. See Figure 19.<br />
+
[[File:QuickStart_MagnificationIntencityLevels.jpg|150px|thumb|left|Intencity levels displayed]]
  
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To show the intensity values<br />
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The Display intensity values check box on the Magnification dialog box allows you to display the intensity values within a magnified region of the image.<br />
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1 Right-click on the image while displaying a magnified region. The Magnification dialog box (Figure 19) appears.<br />
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2 Select the Display intensity values check box. <br />
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If the check box is not available, or dimmed (as it is in Figure 19), increase the magnification by sliding the magnification slider to the right until the check box is active. See Figure 21.<br />
+
−
3 Move the mouse over the image. The intensity values appear within the magnified region (Figure 21).<br />
+
  
 +
===== To show the intensity values: =====
 +
<ol>
 +
<li> Right-click on the image while displaying a magnified region. The Magnification dialog box appears.</li>
 +
<li>Select the Display intensity values check box.</li>
 +
If the check box is not available, or dimmed, increase the magnification by sliding the magnification slider to the right until the check box is active.</li>
 +
<li> Move the mouse over the image. The intensity values appear within the magnified region.</li>
 +
</ol>
  
−
{|
+
'''Tip:''' If you hold down the middle mouse button, MIPAV writes the intensities by position within the image to the Data page of the Output window. You can then save these messages and print them.<br />
−
|-
+
−
|+'''Figure 21. An image window displaying intensity values for a magnified region in the image'''<br />
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−
|-
+
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|[[Image:QuickStart_MagnificationIntencityLevels.jpg]]
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|[[Image:MagnificationDialogBoxDisplayIntensity.jpg]]
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−
|}
+
  
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<br />
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<div id="ImprovingContrast"></div>
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'''Tip:''' If you hold down the middle mouse button, MIPAV writes the intensities by position within the image to the Data page of the Output window. You can then save these messages and print them.<br />
+
  
 
== Improving contrast, adding color, etc. ==
 
== Improving contrast, adding color, etc. ==
−
This section explains how to improve image contrast, add color to images, and create negative images by applying a ''quick lookup table'' (LUT), generating and modifying a histogram, applying pseudo-color LUTs, and creating negative images by inverting their color.<br />'''histogram'''- is a representation of a frequency distribution by means of rectangles whose widths represent class intervals and whose areas are proportional to the corresponding frequencies.<br />'''lookup table (LUT)'''- maps the frequency distribution in a histogram to pseudo-color values.<br />
+
[[File:LUTbeforeandafter.jpg|200px|thumb|left|Images before and after applying Quick LUT]]
  
 +
This section explains how to improve image contrast, add color to images, and create negative images by applying a ''quick lookup table'' (LUT), generating and modifying a histogram, applying pseudo-color LUTs, and creating negative images by inverting their color.
  
−
=== Improving contrast on images quickly ===
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'''Histogram'''- is a representation of a frequency distribution by means of rectangles whose widths represent class intervals and whose areas are proportional to the corresponding frequencies.
  
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MIPAV provides the following quick ways to improve the contrast on images:
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'''Lookup table (LUT)'''- maps the frequency distribution in a histogram to pseudo-color values.
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*Using the Quick LUT icon
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*Using the right mouse button
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*Using the Adjust Window and Level icon
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==== Using the Quick LUT icon ====
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==== Improving image contrast with the Quick LUT icon ====
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[[Image:QuickLUTIco.jpg]] An easy way to improve the contrast in an image is by using the Quick LUT icon, which is located on the image toolbar in the expanded MIPAV window. <br />
+
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'''To use the Quick LUT icon'''<br />
+
  
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1 Open an image file. The image appears in an image window. If an image was not previously open, the initial MIPAV window expands to include all of the menus.<br />
+
An easy way to improve the contrast in an image is by using the Quick LUT icon, which is located on the image toolbar in the expanded MIPAV window.  
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2 Select the image window.<br />
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3 Click Quick LUT.<br />
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4 Hold down the left mouse key and draw a rectangle on a portion of the image.<br />
+
−
5 Release the left mouse key. Based on the amount of dark and light in the portion of the image that you selected, MIPAV changes the contrast in the image.<br />
+
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Repeat steps 3 through 5 as often as you wish to further improve image contrast. When you are satisfied with the contrast, save the image.<br />
+
  
 +
[[Image:QuickLUTIco.jpg]]'''To use Quick LUT:'''
  
−
{|
+
<ol>
−
|-
+
<li>Open an image file. The image appears in an image window. If an image was not previously open, the initial MIPAV window expands to include all of the menus.</li>
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|+ '''Figure 22. Images before and after applying the Quick LUT icon '''<br />
+
<li>Select the image window.</li>
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|-
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<li> Click Quick LUT.</li>
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|[[Image:LUTbeforeandafter.jpg]]
+
<li>Hold down the left mouse key and draw a rectangle on a portion of the image.</li>
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|}
+
<li>Release the left mouse key. Based on the amount of dark and light in the portion of the image that you selected, MIPAV changes the contrast in the image.</li>
  
−
<br />
+
Repeat steps 3 through 5 as often as you wish to further improve image contrast. When you are satisfied with the contrast, save the image.<br />
 +
</ol>
  
 +
== See also: ==
 +
*[[Changing Image Contrast]]
 +
**[[Changing Image Contrast|Adjust Window and Level]]
 +
**[[Changing Image Contrast|Improving contrast by generating and modifying histograms]]
 +
**[[Changing Image Contrast|Using Lookup Table dialog box]]
 +
**[[Changing Image Contrast#PredefinedLuts|Applying color to images using predefined LUTs]]
 +
**[[Changing Image Contrast|Comparing images using alphablending]]
 +
**[[Changing Image Contrast|Restoring images to their original appearance]]
 +
*[[Creating new images]]
 +
*[[Delineating volumes of interest (VOIs)]]
  
−
[[Using the right mouse button]]
+
[[Category:Help]]
 +
[[Category:Getting started]]

Latest revision as of 19:02, 25 April 2012

Displaying images using the default view

In the default view, MIPAV displays the images in a dataset one at a time in an image window. This window can display datasets of any dimension.

Images open in the default image windows

QuickStart Image2.jpg QuickStart Image1.jpg QuickStart ImageWindow.jpg


Selecting views

A view refers to the way an image file is displayed. A view indicates how many images are shown at one time and whether images are advanced manually or automatically. Depending on the view, the size and shape of the image window in which an image is displayed can vary.

This page explains how to display image files in the default, lightbox, and cine view, however, MIPAV allows you to display images using other views also.

MIPAV views

Icon
View
Icon
View
Magnify11Ico.jpg Default VolumeRendererGPUIco.jpg Surface plotter
CineViewIco.jpg Animate VolumeRendererIco.jpg Volume renderer
CineViewIco.jpg Cine (movie) TriPlanarIco.jpg Tri-planar
LightBoxIco.jpg Lightbox TriPlanarViewIco.jpg
 Tri-planar dual
LinkImagesIco.jpg
 Link to another image

VolumeTriPlanarIcoa.jpg

Volume Tri-planar


Displaying images using the lightbox view

An image shown in the lightbox view and the Lightbox Settings dialog box

The lightbox view is similar to the default view, except that all images in the dataset appear in one window at the same time.

To display images in the lightbox view:

  1. Open an image file. The image appears in an image window.
  2. Select the image window. Do one of the following in the MIPAV window:
  • Click the View Light Box icon;
  • Select Image > Views > Light box.
  • The image now appears in a lightbox view.
  • Select Options > Settings in the lightbox view window to adjust the size and shape of the window. The Lightbox Settings dialog box opens.
  • In the dialog box, indicate the number of rows and columns, the grid size, frame border size, color settings, and the magnification.
  • Click Close when complete. The image appears in the lightbox view.

    • To magnify a portion of the image in the lightbox:

    Click Magnify Region and move the pointer to the image section to be magnified. Click Default Mode when finished. Double-clicking an image in the lightbox view updates the 2D image frame for that image.

    Displaying images using the cine view

    When you view an image file in cine view, MIPAV automatically advances images one frame at a time. The effect is much like a film loop.

    To display images in cine view

    1. Open an image file. The image appears in the default image window.
    2. Select Image > Views > Cine (Movie). The images in the image window are advanced automatically.

    Adjusting magnification

    MIPAV allows you to magnify images from 1.5 to 32 times the size of the original image. Using the magnification tools, you can magnify or minify the entire image or just a portion of the image. Much like a traditional magnifying glass, the magnification box can also minify-or reduce the level of magnification-a portion of the image.

    Magnifying images

    To magnify an image, click the Magnify Image icon, and then click the image. Each time you click the Magnify Image icon and click the image, the image doubles in size. If an image is too large for the current window size, scroll bars appear, and you may need to manually adjust the size of the window.

    Reducing the magnification level

    To reduce the magnification level of an image, click Minify Image. Each time you click the Minify Image icon, MIPAV reduces the magnification level of the image by half.

    Restoring the original level of magnification

    To return the image to its original size or original level of magnification, click Original Magnification.

    Magnifying regions within images

    MagnificationRegionIco.jpg The Magnify Region icon allows you to view a square portion, or region, of the image at a specific magnification level. If you have loaded two images</font> into the same image window, the Window Region of Image B icon appears on the toolbar. Use this icon to view a region on the second image, or Image B.

    The Magnification dialog box options

    To use Magnify Region

    1. Open an image.
    2. Click Magnify Region and move it over the image.
      3. As you move the mouse over the image, the Magnify Region icon displays a magnified square region in the image in a red box. The number at the left corner of the square is the magnification level.
    3. You can change the size of the magnifying region to allow you to view larger or smaller regions of the image.
    • Right-click on the image while displaying a magnified region. The Magnification dialog box opens.
    • Type either a higher number for a larger region or a lower number for a smaller region in the Width box. Valid values range from 64.0 to 198.0.
    • Click Apply. The size of the magnified region, or square, either increases or decreases in size.
      • Changing the magnification level of the magnified region works similarly to changing the size of the magnified region.


    Magnification dialog box options
    Magnification
    		 Move the Magnification slide to the right to increase the magnification level or to the left to decrease the magnification level
    Display intensity values When you slide the Magnification slider right past a certain point, this check box becomes active.
    Size Type either a higher number for a larger region or a lower number for a smaller region in the Width box. Valid values range from 64.0 to 198.0. Note: The larger size magnifying glass such as shown in B and C allows to inspect a larger region of the image.
    Apply Applies the changes.
    Close Closes the dialog box.

    Tip: To review or compare a magnified region of the image with the same region at its original magnification, press Shift. To return to the Magnified view, release the key.

    To change the magnification level

    1 Right-click on the image while displaying a magnified region. The Magnification dialog box opens.
    2 Complete the dialog box, and then press Apply.
    3 The magnification level shown in the magnified region changes to the level you specified.

    Showing intensity values through the magnification glass

    Intencity levels displayed

    The Display intensity values check box on the Magnification dialog box allows you to display the intensity values within a magnified region of the image.

    To show the intensity values:
    1. Right-click on the image while displaying a magnified region. The Magnification dialog box appears.
    2. Select the Display intensity values check box.
      3. If the check box is not available, or dimmed, increase the magnification by sliding the magnification slider to the right until the check box is active.
    3. Move the mouse over the image. The intensity values appear within the magnified region.

    Tip: If you hold down the middle mouse button, MIPAV writes the intensities by position within the image to the Data page of the Output window. You can then save these messages and print them.

    Improving contrast, adding color, etc.

    Images before and after applying Quick LUT

    This section explains how to improve image contrast, add color to images, and create negative images by applying a quick lookup table (LUT), generating and modifying a histogram, applying pseudo-color LUTs, and creating negative images by inverting their color.

    Histogram- is a representation of a frequency distribution by means of rectangles whose widths represent class intervals and whose areas are proportional to the corresponding frequencies.

    Lookup table (LUT)- maps the frequency distribution in a histogram to pseudo-color values.

    Improving image contrast with the Quick LUT icon

    An easy way to improve the contrast in an image is by using the Quick LUT icon, which is located on the image toolbar in the expanded MIPAV window.

    QuickLUTIco.jpgTo use Quick LUT:

    1. Open an image file. The image appears in an image window. If an image was not previously open, the initial MIPAV window expands to include all of the menus.
    2. Select the image window.
    3. Click Quick LUT.
    4. Hold down the left mouse key and draw a rectangle on a portion of the image.
    5. Release the left mouse key. Based on the amount of dark and light in the portion of the image that you selected, MIPAV changes the contrast in the image.

      6. Repeat steps 3 through 5 as often as you wish to further improve image contrast. When you are satisfied with the contrast, save the image.

    See also:

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