Pixel values obtained from an imagemodel
object can be returned in several formats suitable for display in different interactive image processing tools.
Create an image model associated with a grayscale image.
im =
IMAGEMODEL object accessing an image with these properties:
ClassType: 'uint8'
DisplayRange: [0 255]
ImageHeight: 512
ImageType: 'intensity'
ImageWidth: 512
MinIntensity: 0
MaxIntensity: 255
Select a pixel by specifying the row and column coordinates. This pixel has (row, column) coordinates (50, 250).
Get the numeric value of the pixel using the getPixelValue
function.
Convert the numeric pixel value to a string. First, get a function formatFcn
that formats numeric pixel values by using the getNumberFormatFcn
. Then, specify the numeric value of the pixel as the input argument to formatFcn
to get the formatted string.
Get the default pixel information string using the getDefaultPixelInfoString
function. This string depends on the type of image but does not use the pixel values. The pixel information string is suitable for use with the Pixel Information tool.
defaultPxInfoStr =
'Intensity'
Using the same string format, get the pixel information string for the specified pixel by using the getPixelInfoString
function.
Get the default pixel region string using the getDefaultPixelRegionString
function. This string depends on the type of image but does not use the pixel values. The pixel region string is suitable for use with the Pixel Region tool.
There are two steps to get the pixel region string for the specified pixel in the same string format. First, get a function formatFcn
that formats numeric pixel values by using the getPixelRegionFormatFcn
function. Then, specify the row and column coordinate of the pixel as input arguments to formatFcn
to get the formatted string.
pxRegStr = 1×1 cell array
{'151'}