1. A display method for high dynamic range images, comprising displaying an image and a histogram panel on a screen, wherein the image is a high dynamic range image and the histogram panel displays low dynamic range data and high dynamic range data of the image, wherein the low dynamic range data comprises data of pixels comprised in the image specifying a brightness level ranging from 0˜255, and the high dynamic range data comprises data of pixels comprised in the image specifying a brightness level lower than 0 and/or higher than 255.