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In computer graphics, when a given image is intended to be placed over a background, the transparent areas can be specified through a binary mask. [1] This way, for each intended image there are actually two bitmaps: the actual image, in which the unused areas are given a pixel value with all bits set to 0s, and an additional mask, in which the ...
A binary image is a digital image that consists of pixels that ... Binary images often arise in digital image processing of more complex images, in the form of masks, ...
In image processing, a kernel, convolution matrix, or mask is a small matrix used for blurring, sharpening, embossing, edge detection, and more. This is accomplished by doing a convolution between the kernel and an image .
However, similar statements hold when the mask is not binary.) The images below present a simple opening-by-reconstruction example which extracts the vertical strokes from an input text image. Since the original image is converted from grayscale to binary image, it has a few distortions in some characters so that same characters might have ...
A binary image is viewed in mathematical morphology as a subset of a Euclidean space R d or the integer grid Z d, for some dimension d. Let E be a Euclidean space or an integer grid, A a binary image in E, and B a structuring element regarded as a subset of R d. The dilation of A by B is defined by
When combining two images the alpha matte is utilized, also known as the transparency map. In the case of digital video, the alpha matte is a sequence of images. The matte can serve as a binary mask, defining which of the image parts are visible.
In binary morphology, an image is viewed as a subset of a Euclidean space or the integer grid, for some dimension d.. The basic idea in binary morphology is to probe an image with a simple, pre-defined shape, drawing conclusions on how this shape fits or misses the shapes in the image.
A schematic illustration of various types of masks: (a) a conventional (binary) mask; (b) an alternating phase-shift mask; (c) an attenuated phase-shift mask. Left: the real part of a plane wave traveling downward. Right: the effect of introducing in the path of the wave a transparent mask with a 180° phase-shifting region.