Patent ID: 9681026
Date: 2017-06-13
CPC Classifications: G06T,H04N

Claim:
1. A method for performing lens shading compensation, comprising: receiving at least two series of source images of different exposure settings; performing first lens shading compensation on the at least two series of source images respectively; analyzing luminance distribution of the at least two series of compensated source images; composing a series of HDR images from the at least two series of compensated source images according to the luminance distribution; performing second lens shading compensation on the series of HDR image; and performing tone mapping on the series of compensated HDR images; wherein the first lens shading compensation is performed by applying shading factors to the at least two series of source images, and result of the second lens shading compensation is fed back to adjust at least one of the shading factors of the first lens shading compensation; wherein each of the first and second tens shading compensations is performed according to pixel positions and variance between color channels.