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Image processing apparatus, method, and program

An image processing device and image technology, applied in the field of image processing, can solve problems such as difficult adjustments

Inactive Publication Date: 2014-01-22
SONY CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, if the white balance gain under ambient light is used as it is, it is difficult to make correct adjustments

Method used

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  • Image processing apparatus, method, and program
  • Image processing apparatus, method, and program
  • Image processing apparatus, method, and program

Examples

Experimental program
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no. 1 example

[0038] [Structure Example of Imaging Device]

[0039] figure 1 is a block diagram showing a configuration example of the imaging apparatus 100 in the first embodiment of the present technology. The imaging device 100 includes an imaging lens 110 , an image sensor 120 , a photometric and ranging sensor 130 , a signal processing section 140 , an image memory 150 , a lens control section 160 , a flash 170 , an emission control section 180 , and an operation section 190 . The imaging device 100 also includes an image processing device 200 and a camera control device 300 .

[0040] The imaging lens 110 is a lens that forms an image of an imaging subject on the image sensor 120 . The imaging lens 110 includes lenses such as a focus lens and a zoom lens. When the flash 170 is not emitting light, ambient light is incident into the imaging lens 110 , and when the flash 170 is emitting light, mixed light is incident into the imaging lens 110 . Ambient light is light from a light sou...

no. 2 example

[0131] [Structure Example of Image Processing Device]

[0132] Figure 13 is a block diagram showing a configuration example of the image processing apparatus 200 in the second embodiment. In the first embodiment, the image processing apparatus 200 performs correction of changing the reference color temperature according to the light quantity ratio of ambient light to auxiliary light on the premise of changing the color temperature of ambient light according to the light quantity ratio. However, in some cases, the color temperature of the ambient light may not be changed according to the light quantity ratio of the ambient light to the auxiliary light. For example, when the ambient light is light from an artificial light source such as a fluorescent lamp, the color temperature of the ambient light is sometimes not very low compared to that of the auxiliary light even if the light quantity of the ambient light and the auxiliary light is relatively small. If, in this case, cor...

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Abstract

The present invention relates to an image processing apparatus, method, and program. There is provided an image processing apparatus including an environment light white balance gain generating section configured to generate an environment light white balance gain from an image taken under environment light, a combined white balance gain generating section configured to combine a fill light white balance gain corresponding to a color temperature of fill light with the environment light white balance gain to generate a combined white balance gain, and a white balance gain correcting section configured to correct the combined white balance gain in accordance with a ratio of the environment light to the fill light. The corrected combined white balance gain is applied to an image taken under mixed light including the fill light and the environment light.

Description

technical field [0001] The present technology relates to an apparatus and method for image processing, and a program for causing a computer to execute the method. More specifically, the present technology relates to an apparatus and method for image processing including execution of white balance processing, and a program for causing a computer to execute the method. Background technique [0002] In an imaging device, white balance processing is often used to adjust the color shade of an image so as to obtain correct color performance under the light source used for imaging. In the white balance process, the imaging device determines an appropriate white balance gain according to the color temperature of ambient light, which is light in the photography environment, and adjusts the color tone according to the determined white balance gain. Color temperature, in terms of temperature, expresses the color of the light beam from each light source. [0003] In the case where an ...

Claims

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Application Information

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IPC IPC(8): H04N9/04H04N9/73H04N5/235
CPCH04N23/88H04N9/73
Inventor 吉田卓司
Owner SONY CORP
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