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Image pickup system

A camera system and camera technology, applied in the field of camera systems, can solve problems such as cumbersome calibration work, and achieve the effect of simple and easy calibration work

Inactive Publication Date: 2006-11-08
NATURE TECH INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] However, when using the Knuckles method, it is necessary to perform a mapping operation between the reference screen and the main screen to make the two correspond
Therefore, in order to ensure the correctness of color correction, complex calibration must be performed before mapping, and this calibration work is very tedious

Method used

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Embodiment Construction

[0112] Refer below Figure 1-14 , the first embodiment of the present invention will be described. Before the description, the symbols used in this embodiment are defined as follows:

[0113] XMX: The maximum value of the number of pixels in the horizontal direction of the image.

[0114] YMX: The maximum value of the number of pixels in the vertical direction of the image.

[0115] NMIN: The minimum value of the boundary line of the reflective surface

[0116] NMAX: The maximum value of the boundary line of the reflective surface

[0117] S: user-defined image brightness factor

[0118] x: the horizontal coordinate of the image in pixels

[0119] y: the vertical coordinate of the image in pixels

[0120] rd[x][y], gd[x][y], bd[x][y]: direct image signal values ​​of red, green and blue channels

[0121] rz[x][y], gz[x][y], bz[x][y]: the zero image signal value of each channel of red, green and blue

[0122] r[x][y], g[x][y], b[x][y]: Effective input direct image signal...

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Abstract

An imaging system for correcting the color of an image, comprising: a camera: having a lens, an imaging element, a photosensitive element and a reflective surface and shooting a main picture on the imaging element, the imaging element and the photosensitive element having multiple a color channel, the reflective surface is arranged in front of the lens, within the field of view corresponding to the photosensitive element of the camera, and passes through the The lens makes the photosensitive element light-sensitive; the correction device: corrects the color of the image of the main picture captured according to the reference signal value, and the reference signal value is a pixel part in the reflected light of the reference picture received by the photosensitive element The value or multiple pixel parts are averaged over each color channel.

Description

technical field [0001] The present invention relates to an imaging system for correcting the color of an object to be photographed or stabilizing the density of an image, a camera and an image processing device used therefor. Background technique [0002] The color of an object is easily affected by incident light, and it is very difficult to keep the color of an image captured by a camera constant without being affected by incident light. Even in this case, people can still have a constant understanding of the color of the object, and this ability is called color invariance (Color Consistency). [0003] In the past, in order to maintain the invariance of the color, there are two color correction methods for the image captured by the camera: the spatial correction method for correcting each partition of the camera separately and the global correction method for the overall average correction of the image. Examples of using the former include the Retinex method, and examples...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N9/04H04N5/225H04N9/73
CPCH04N23/55H04N25/611H04N23/88H04N9/64
Inventor 默罕默德·阿布里拉·阿部德拉迪夫北村光司
Owner NATURE TECH INC