Sensitization device and method and device for white balance of sensitization device

Abstract

The invention provides a sensitization device and a method and a device for white balance of the sensitization device. The method for white balance includes the following steps: determining a reference white point according to image information of an input image, calculating a first color deviation value and a second color deviation value according to the reference white point, judging whether white balance adjustment is conducted according to the first color deviation value and the second color deviation value, determining a scene according to the image information of the image if white balance adjustment is conducted, determining range of different channel gain values according to the scene, adjusting the channel gain values to obtain end value of the channel gain values and adjusting the original channel gain value of the sensitization device according to the final value of the channel gain values. By means of the method, the step of determining image scene is increased, adjusting range of different channel gain values under different scenes is determined, and automatic white balance under high color temperature shooting environment can be achieved.

Description

technical field [0001] The invention relates to the technical field of image processing, in particular to a photosensitive device and a white balance method and device used therefor. Background technique [0002] Usually under different color temperature conditions, the color of the target object will change differently. Among them, the change of white objects is the most obvious. For example, in the environment of low color temperature (2600K) of indoor incandescent lamps, white objects look reddish; in the environment of high color temperature (10000K) of sunlight on a sunny day, white objects look bluish . In order to reduce the influence of external light on the color of the target object as much as possible, so that the images taken under different color temperature environments can show the original color of the target object, color correction is required to achieve true color balance, which is called white balance. [0003] At present, in the algorithm for realizin...

AI Technical Summary

Problems solved by technology

[0004] The problem with the existing technology is that this automatic white balance can be adjusted normally within the color temperature range of 2500K-7500K. However, in outdoor scenes where the color temperature is relatively high, due to the reflection of some objects, these reflection points are easily judged as reference white dots, resulting in misadjustment

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