|Image Processing Toolbox User's Guide|
Display image in the Image Tool
opens a new Image Tool in an empty state. Use the File menu options Open or Import from Workspace to choose an image for display.
displays the intensity image
I as a grayscale intensity image, specifying the display range for
I. The value
LOW (and any value less than
LOW) is displayed as black, the value
HIGH (and any value greater than
HIGH) is displayed as white. Values in between are displayed as intermediate shades of gray.
imtool uses the default number of gray levels. If you use an empty matrix (
[min(I(:)) max(I(:))]; the minimum value in
I is displayed as black, and the maximum value is displayed as white.
displays the truecolor image
displays the binary image
BW. Values of 0 is displayed as black, and values of 1 is displayed as white.
displays the indexed image
X with colormap
displays the image contained in the graphics file
filename. The file must contain an image that can be read by
dicomread to read the image from the file, but the image data is not stored in the MATLAB workspace. If the file contains multiple images, the first one is displayed. The file must be in the current directory or on the MATLAB path.
hfig = imtool(...)
returns a handle
Hfig to the figure created by
close(Hfig) closes the image tool.
imtool close all
closes all image tools.
) displays the image, specifying parameters and corresponding values that control various aspects of the image display. The following table lists all
imshow parameters. Parameter names can be abbreviated, and case does not matter.
Note: Including the parameter name is optional, except when the image is specified by a filename. The syntax
||One of two text strings:
When set to
When set to
When set to a numeric value, the value specifies the magnification as a percentage. For example, if you specify 100, the image is displayed at 100% magnification (one screen pixel for each image pixel).
By default, the initial magnification parameter is set to the value returned by
A truecolor image can be
single. An indexed image can be
single. An intensity image can be
uint16. The input image must be nonsparse.
Related Toolbox Preferences
You can use the
iptsetpref function to set the following toolbox preference that modifies the behavior of
'ImtoolInitialMagnification'controls the initial magnification for image display, unless you override it in a particular call by specifying
For more information about these preferences, see the reference entry for
imshow is the toolbox's fundamental image display function, optimizing figure, axes, and image object property settings for image display.
imtool provides all the image display capabilities of
imshow but also provides access to several other tools for navigating and exploring images, such as the Pixel Region tool, Image Information tool, and the Adjust Contrast tool.
imtool presents an integrated environment for displaying images and performing some common image processing tasks.
Display an image from a file.
Display an indexed image.
Display an intensity image.
Display an intensity image, adjusting the display range.
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