Patent ID: 8223258

Claim:
A backlight photographing method, applicable to a digital camera, comprising: executing a backlight detection program to obtain a backlight flag, wherein the backlight detection program comprises: capturing an image; selecting a target region from the image, wherein the target region has a plurality of blocks; calculating a brightness representative value of each block respectively; calculating that an amount of the blocks having the brightness representative value higher than a first threshold value is a high brightness block number; calculating that an amount of the blocks having the brightness representative value lower than a second threshold value is a low brightness block number; determining whether the high brightness block number is higher than a third threshold value or not and whether the low brightness block number is higher than a fourth threshold value or not; setting the backlight flag in a backlight status if yes; when the backlight flag is in the backlight status, executing a parameter adjustment program comprising: averaging the brightness representative values of the blocks having the brightness representative value lower than the second threshold value to obtain a low brightness characteristic value; and adjusting a photographing parameter of the digital camera according to the low brightness characteristic value; and emitting a flash.