Method and device of correcting Gamma curve of display based on DICOM curve

Abstract

The present invention relates to a method and device of correcting a Gamma curve of a display based on a DICOM curve. The method comprises correcting the R, G and B parameters of the gray scale pictures every two of which have m intervals of the display, and a R, G and B parameter correction step comprises obtaining the x, y and Y values of the current gray scale picture displayed in the display and read by a sensor, wherein the x and y values are the color temperature coordinate values, and the Y value is a brightness value; calculating the difference values of the x, y and Y values of the current gray scale picture with the target x, y and Y values, and determining whether the difference values are all less than or equal to the corresponding threshold values, wherein the target x and y values are the standard color temperature values under a preset color temperature, and the target Y value is a brightness value corresponding to the current scale in a DICOM standard curve; if not, calculating the R, G and B parameter increments according to the difference values, and according to the R, G and B parameter increments, correcting the R, G and B parameters of the display, and returning to the first step.

Description

technical field [0001] The invention relates to the technical field of displays, in particular to a method and device for calibrating a Gamma curve of a display based on a DICOM curve. Background technique [0002] Medical displays and high-definition and high-brightness displays used in the medical industry are used in various digital imaging equipment such as DR, CR, multi-row CT, and 3D images. Studies have shown that human eyes have obvious differences in the ability to distinguish different brightnesses. A large number of traditional experimental statistics have standardized an international standard gray-scale brightness curve, which is called the standard DICOM curve. By introducing the change of visual response to brightness into the image display of professional medical monitors, the ability of doctors to diagnose lesions in medical images is improved. Generally, professional medical monitors must support the DICOM PART14 standard, that is to say, they must have th...

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Problems solved by technology

[0004] In view of the above situation, it is necessary to provide a method for calibrating the Gamma curve of the display based on the DICOM curve for the problem that the Gamma curve of the display in the prior art cannot be calibrated accurately

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