One of the multi-camera color correction algorithms---Color transform parametric solution based on LM algorithm

• Issue background

In a multi-view video system, the same scene is filmed with multiple cameras. However, because of the different characteristic parameters between cameras, there is a problem with color consistency (color consistency) and color consistency (color constancy). Because the color sense is the subjective feeling of people, it is not easy to quantify the comparison. So this only solves the problem of color inconsistency.
As shown, there is a problem of color inconsistency between the left and right pictures.

• Color Correction Model

  The camera has a number of intrinsic parameters that affect the color of the captured image. There are three elements which are mainly affected.

The calibration formula can be obtained by solving the gain and Offset,gamma three parameters.

• Iterative Solution and optimization

  The LM algorithm can be used to solve the equation parameters.
  STEP1: Calculates the corresponding pixel points using the SIFT feature descriptor
  

Solution of iterative optimization equation for STEP2:LM algorithm
LM algorithm reference: http://www.shenlejun.cn/article/show.asp?id=97

• Results

One of the multi-camera color correction algorithms---Color transform parametric solution based on LM algorithm