Patent ID: 9479705
Filing Date: 2016-10-25
CPC Classification: G06T,H04N

Claim Text:
1. An exposure value adjustment apparatus, comprising: a camera module, being configured to capture a reference image by a base exposure value; and a processor, being electrically connected to the camera module and configured to generate a histogram of the reference image, divide the histogram into a low partial histogram, a middle partial histogram, and a high partial histogram by a first threshold and a second threshold, calculate a first ratio by a number of the pixels within the low partial histogram and a number of the pixels within the middle partial histogram, decide a high exposure value according to the first ratio, calculate a second ratio by a number of the pixels within the high partial histogram and the number of the pixels within the middle partial histogram, decide a low exposure value according to the second ratio, and decide a middle exposure value according to the high exposure value and the low exposure value.