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"Image Processing" refers to tools that modify the gray levels of images. All image processing tools have a common type of output: an image that can be further processed or analyzed.
Visionscape® provides the following image processing tools:
Among the image processing tools, BinaryMorph Filter, GrayMorph Filter, MeanFilter, and Sobel Filter are further classified as Image Enhancement tools. Image Enhancement uses neighborhood operators to modify the gray levels of the image. As enhancement is performed, each result pixel's gray level is a mathematical function of the gray levels of the pixels in the immediate neighborhood (i.e., surrounding pixels).
The ImageArith tool can manipulate images arithmetically or logically. It can add, subtract, multiply, or perform logical operations, on a pixel-by-pixel basis, between images or between different regions of a single image. It can also binarize, copy, mask and shift, etc., on each pixel of a single input image.
The GainOffset Filter tool, a special case of the ImageArith tool, applies a gain and an offset to each pixel of the input image.
The image processing tools do not generate any features that may be used by geometry or measurement tools.
The remainder of this chapter discusses the following tools:
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