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A method and terminal for image processing

An image processing and image technology, applied in the field of image processing, can solve problems such as the color cast of human skin color, and achieve the effect of natural human skin color

Active Publication Date: 2017-11-17
SHENZHEN TRANSSION HLDG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current white balance technology in special environments, such as: dark vision environment or environment with complex light effects in the scene, will cause serious color cast of people's skin color in the process of image processing

Method used

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  • A method and terminal for image processing
  • A method and terminal for image processing
  • A method and terminal for image processing

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Embodiment approach

[0091] Specifically, the probability target chromaticity value can be obtained through a probability density algorithm. Its theory and implementation are as follows:

[0092] From the knowledge of probability theory, assuming that the sample data value obeys an unknown probability density function in the D-dimensional space, then the probability in the region R is:

[0093] P=∫ R p(x)dx (16)

[0094] In this embodiment, D is a 2-dimensional space, R is the target specular reflection area, the sample data can be the above-mentioned intercept d, and the probability P means that the probability of each sample data point falling into the area R is P. Assuming that K of the N sample data points fall into the region R, then it should obey the binomial distribution:

[0095]

[0096] When the N sample data is large, K is approximately equal to N*P. Conversely, assuming that the region R is small enough, then P is approximately equal to p(x)*V (V is the space of the region R). ...

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Abstract

The embodiment of the invention provides an image processing method, comprising the steps of performing face detection on an image to be processed, thus obtaining a face area in the image to be processed; determining a target mirror reflection area in the face area; projecting the target mirror reflection area into an IIC space, thus obtaining projection data of the target mirror reflection area; fitting the projection data, thus obtaining a fitting straight-line; working out a plurality of chromaticity values of the target mirror reflection area based on the fitting straight-line; estimating the target chromaticity value of a preset channel according to the plurality of chromaticity values, wherein the preset channel is any one of r, g and b channels; determining the color temperature of the image to be processed via the target chromaticity value; and processing the image to be processed according to the color temperature. The embodiment of the invention also provides a terminal. According to the method, the skin color of the figure in the image can be more natural.

Description

technical field [0001] The present invention relates to the technical field of image processing, in particular to an image processing method and terminal. Background technique [0002] At present, no matter the special camera or the camera of a terminal (such as a mobile phone, a tablet computer, etc.) is in the process of taking pictures, the white balance technology must be used. The purpose of white balance technology is directly related to the color constancy of the human eye. The so-called color constancy refers to the perceptual characteristic that people's perception of the color of the object's surface remains unchanged when the color light illuminating the object's surface changes. The purpose of white balance technology is to ensure that there is no color difference between the captured image and the scene seen by the human eye. The current white balance technology in special environments, such as dark vision environments or environments with complex lighting eff...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N9/73
CPCH04N9/73
Inventor 辛浩然
Owner SHENZHEN TRANSSION HLDG CO LTD