Definition: In the context of image processing, "unsifted" refers to a technique used in signal processing where a high-pass filter (a type of low-pass filter) is applied to an input image. This operation removes noise and artifacts from the image while preserving its essential features. An unsifted image has been effectively filtered out by the high-pass filter, allowing for the detection and removal of unwanted details or structures in the original image. It's often used in applications such as image analysis, computer
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