Difference between revisions of "Creating new images"
(→Generating contour VOIs using predefined shapes) |
(→Adding and moving boundary points on VOIs) |
||
Line 71: | Line 71: | ||
{| border="1" cellpadding="5" | {| border="1" cellpadding="5" | ||
− | |+ <div style="font-style: normal; margin-bottom: 3pt; margin-left: 0pt; margin-right: 0pt; margin-top: 9pt; text-align: left; text-decoration: none; text-indent: 0pt; text-transform: none; vertical-align: baseline">'''<font color="#000000"> Figure 30. Adding a point and adjusting the boundary of a | + | |+ <div style="font-style: normal; margin-bottom: 3pt; margin-left: 0pt; margin-right: 0pt; margin-top: 9pt; text-align: left; text-decoration: none; text-indent: 0pt; text-transform: none; vertical-align: baseline">'''<font color="#000000"> Figure 30. Adding a point and adjusting the boundary of a rectangular VOI<br /></font>'''</div> |
|- | |- | ||
− | | | + | |[[Image:exampleBoundaryRectangularVOI.jpg]] |
− | + | ||
− | + | ||
− | [[Image:exampleBoundaryRectangularVOI.jpg]] | + | |
− | + | ||
|} | |} | ||
Revision as of 16:24, 9 February 2012
Contents
Creating new images
Image type
|
Synonymous with data type. The image type determines the number of intensities that can be represented in an image. For example, a Boolean image can display two intensities: 1 and 0. Boolean-1 bit per pixel (1 on, 0 off) Unsigned byte-1 byte per pixel (0, 255) Unsigned short-2 bytes per pixel (0, 65535) Unsigned integer-4 bytes per pixel (0, 232 -1) Float-4 bytes per pixel (-3.4E38, 3.4E38) ARGB-3 bytes per pixel, plus 1 byte; 8 bits per color channel (alpha, red, green, and blue) Byte-1 byte per pixel (-128, 127) Short-2 bytes per pixel (-32768, 32767) Integer-4 bytes per pixel (-231, 231-1) Long-8 bytes per pixel (-9.22E18, 9.22E18) Double-8 bytes per pixel (-1.8E308, 1.8E308) ARGB U short-2 bytes per color channel and 2 bytes for alpha channel
| |
Dimensions and resolutions
|
Degree of manifolding of a quantity such as space or time. Two-dimensional datasets are composed of one image (the two dimensions are length and width). Generally, three-dimensional datasets are composed of more than one image. The third dimension is generally space. The fourth dimension is generally time. (Either time or space can be the third or fourth dimensions.) Zeros in the text boxes indicate that the dimension is not represented in the image. For example, if the text boxes for the first and second dimensions are filled, and the rest of the text boxes are filled with a zero, the image only has two dimensions. Dimensions 1st-Width (along x axis) 2nd-Length (along y axis) 3rd-Depth (along z axis) 4th-Time (along t axis) 5th-Fifth dimension Resolutions Size of pixel or voxel per dimensions 1 through 5.
| |
Units of measure
|
Indicates the unit of measurement for each of the applicable dimensions.
| |
Header offset
|
Indicates the size of the space reserved at the beginning of the file where specific types of information is kept. This space, which is called the header, precedes the image data. If you know the length of the header, type it in this box. When MIPAV accesses the file, it skips the header offset and begins to read the image data. Note that not all image file formats have a header.
| |
Big endian
|
Indicates whether image data is stored in the big endian format. If not, the image data is stored in the little endian format. Endianess refers to the byte ordering of the data. Some computers order the data with the least significant byte (LSB) first followed by the most significant byte (MSB). This byte order is referred as little endian or Intel byte ordering. Machines that use little-endian byte ordering are VAXes, Intel x86, and Pentium. The reverse is MSB and then LSB, which is referred as big endian or Motorola byte ordering. Machines that use big-endian byte ordering are IBM System 3D, RISC, and a Motorola 680x0. MIPAV is biendian; it supports both big- and little-endian byte-ordering formats.
| |
OK
|
Applies the parameters that you specified and creates a blank image.
| |
Cancel
|
Disregards any changes you made in this dialog box, closes the dialog box, and does not create a blank image.
| |
Help
|
Displays online help for this dialog box.TBD.
|
Delineating volumes of interest (VOIs)
Each VOI can be formed from multiple contours in a single slice or multiple slices. Once an object is segmented and defined by a VOI, statistics of the volume can be calculated.
MIPAV supports over 32,000 unique VOIs on a single dataset. Additionally, you can move or delete nodes on the VOI and add new points. VOI types include:
Generating contour VOIs using predefined shapes
Adding and moving boundary points on VOIs
Automatically adjusting contour boundaries
To delete an old contour, select the contour, and then select Cut Selected Contour, or press the Del key on the keyboard.
Scale of the Gaussian
|
Enter values for X,Y, and Z directions which will be used to correct blurring. The default value is 2.0
|
{| align="center" |
|- |
|
|- |
|
|- |
| rowspan="1" colspan="2" |
|- |
| rowspan="1" colspan="2" |
|- |
| rowspan="1" colspan="2" |
|- |
| rowspan="1" colspan="2" |
|- | rowspan="1" colspan="3" |
|}
Annotating images with text
Font options |
Font-Specifies the font family, or typeface, for the text. When you select another typeface, "Enter text here" appears in that typeface. |
{| align="center" |
|- |
| Bold-Specifies that the type style should be bold. |- |
| Italic-Specifies that the type style should be italic. |- |
| Pt. (point) size-Specifies the point size of the typeface. |- |
| Color-Specifies the color of the text. When you click this box, the Pick VOI Color dialog box opens. |- | Text | rowspan="1" colspan="2" | Displays the text that should appear on the image. |- | Marker options | rowspan="1" colspan="2" | The arrow marker appears if you check the Use Arrow Marker box. |- | OK | rowspan="1" colspan="2" | Applies the parameters that you specified and places the text on the image, which you can move to any position on the image. |- | Cancel | rowspan="1" colspan="2" | Disregards any changes you made in this dialog box, closes the dialog box, and does not place text on the image. |- | Help | rowspan="1" colspan="2" | Displays online help for this dialog box. |}
Previewing Font Selection The Annotation dialog box allows you to preview the font family, style, size, and color of the text before you click OK and add the text to the image. {| align="center" |
|}