IMAGE ENHANCEMENT METHOD AND DEVICE BASED ON NON-CLASSICAL RECEPTIVE FIELD SUPPRESSION

An image enhancement method calculates a central response value of a target pixel based on an original pixel value of the target pixel. The method includes calculating a first total suppression value of the target pixel, where the values of suppression to the target pixel from the neighborhood pixels refer to values representing suppression effects imposed by the neighborhood pixels on the target pixel. When the central response value is greater than the first total suppression value, the first total suppression value is subtracted from the central response value, and the difference is used as a pixel value of the target pixel after image enhancement. When the central response value is less than the first total suppression value, a value 0 is used as a pixel value of the target pixel after image enhancement.