Grayscale extension adaptive enhancement method

Abstract

The invention discloses a grayscale extension adaptive enhancement method, which is characterized in that a grayscale extension adaptive enhancement hardware system comprises a display card, a decoding unit, an image identification unit, a grayscale correction unit X, a grayscale correction unit Y, a frame rate control unit X, a frame rate control unit Y, a coding unit and a display unit, wherein the decoding unit is connected with the display card, the image identification unit is connected with the decoding unit, the grayscale correction unit X and the grayscale correction unit Y are connected with the image identification unit, the frame rate control unit X is connected with the grayscale correction unit X, the frame rate control unit Y is connected with the grayscale correction unit Y, the coding unit is connected with the frame rate control unit X and the frame rate control unit Y, and the display unit is connected with the coding unit. According to the invention, a grayscale image can present 3*2<M+N> grayscales after being processed through the frame rate control unit Y so as to realize enhancement display for the grayscale image, and the frame rate control unit Y does not require to increase the area due to the large number of extended grayscales. The grayscale extension adaptive enhancement method can realize adaptive grayscale extension of a grayscale image, and enables display of the grayscale image to be more vivid and more exquisite.

Description

technical field [0001] The invention relates to a gray scale expansion self-adaptive enhancement method, which belongs to the technical field of medical image processing. Background technique [0002] Color depth represents the number of colors in a digital image, and its size largely determines the image's recognizability. In the field of medical image display, color depth is particularly important, because it is related to the ability to accurately detect lesions and reduce the possibility of misdiagnosis. [0003] Most medical image display devices use frame rate control technology to achieve gray scale expansion to improve color depth. Due to the limitations of its principle, the number of gray scales that can be expanded by frame rate control technology is limited. Now the bit width of more advanced professional medical displays can reach 16 bits, that is, the display has the ability to display 2 16 However, when the bit width of the display is further increased, it i...

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