LastOperation ACE Reference Guide, 18317-000 Rev A Page 349 Value Name Description 27 hsMorphologicalErode Sets each pixel in the output image as the smallest luminance value of all the input image pixels in the neighborhood defined by the selected kernel size. 28 hsMorphologicalClose Has the effect of removing small dark particles and holes within objects. 29 hsMorphologicalOpen Has the effect of removing peaks from an image, leaving only the image background. 30 hsHistogramEqualization Equalization operation enhances the Input Image by flattening the histogram of the Input Image.
31 hsHistogramStretching Stretches (increases) the contrast in an image by applying a simple piecewise linear intensity transformation based on the histogram of the Input Image. 32 hsHistogramLightThreshold Changes each pixel value depending on whether they are less or greater than the specified threshold. If an input pixel value is less than the threshold, the corresponding output pixel is set to the minimum acceptable value. Otherwise, it is set to the maximum presentable value. 33 hsHistogramDarkThreshold Changes each pixel value depending on whether they are less or greater than the specified threshold.
If an input pixel value is less than the threshold, the corresponding output pixel is set to the maximum presentable value. Otherwise, it is set to the minimum acceptable value. 34 hsTransformFFT Converts and outputs a frequency description of the input image by applying a Fast Fourier Transform (FFT). 35 hsTransformDCT Converts and outputs a frequency description of the input image by applying a Discrete Cosine Transform (DCT).Parameters