image enhancement method and an image enhancement device

• Main Authors: DAI SHENGKUI, ZHU GUANGXI
• Format: Patent
• Language: Chinese; English
• Published: 24.05.2019
• Subjects: CALCULATING; COMPUTING; COUNTING; IMAGE DATA PROCESSING OR GENERATION, IN GENERAL; PHYSICS

The invention discloses an image enhancement method and an image enhancement device. The image enhancement method comprises the steps of obtaining an original grayscale image; dividing a bright regionand a dark region according to the total number of pixels of the original grayscale image and the number of pixels corresponding to each grayscale value;calculating the gray scale mean value of the dark area, and determining the amplification factor of each pixel according to the gray scale mean value and a preset gray scale threshold value; and according to the magnification factor of each pixel, carrying out brightness enhancement processing on the original gray level image to obtain a target gray level image. According to the gray level distribution condition of the original gray level image, the magnification factor of each pixel is determined to enhance the brightness of the image, and by adopting the point processing algorithm, the processing efficiency is high, the occupied resources are few, and the real-