Image pickup apparatus, method and program for white balance control

An image capture device and image capture technology, applied in the direction of exposure control, image communication, photography, etc., can solve complex operations and other problems

Inactive Publication Date: 2006-09-27
CASIO COMPUTER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, this will force the user to perform complex operations, so an automatic white balance function that can automatically obtain the white balance is provided.

Method used

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  • Image pickup apparatus, method and program for white balance control
  • Image pickup apparatus, method and program for white balance control
  • Image pickup apparatus, method and program for white balance control

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Embodiment Construction

[0048] An embodiment of the present invention will be described below with reference to the accompanying drawings.

[0049] Fig. 1 is a block diagram showing the configuration of an electronic camera as an embodiment of the present invention. The CCD 25 located behind the lens 20 is driven by a timing generator 26 and a vertical driver 27 . At the CCD 25, a color filter array of primary colors RGB is provided. In each of the R, G, and B light-receiving portions, charge accumulation is performed on the optical image formed on the light-receiving surface of the CCD 25, and converted into R, G, and B signal charges according to light intensity, and the charge-accumulated The image is output to the unit circuit 28 as an analog image signal. The unit circuit 28 includes a CDS unit for removing noise from an input captured image signal and an A / D converter for converting the noise-removed captured image signal into a digital image. data. The image data output by the unit circuit...

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PUM

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Abstract

An electronic still camera has first and second gain controller circuits and a gain storage memory. The gain storage memory includes a first gain table for storing gains for an R amplifier and a B amplifier of the first gain controller circuit; and a second gain table for storing gains for an R amplifier and a B amplifier of the second gain controller circuit, during auto white balance control using light emission of a strobe. The gains of the second gain table are sequentially set to the second gain controller circuit to carry out white detection. Based on a result of the detection, a gain to be set to the first gain controller circuit is selected from the first gain table, and the selected gain is set to the first gain controller circuit.

Description

technical field [0001] The invention relates to an image capture device, a white balance control method and a white balance control program. Background technique [0002] As is well known, an electronic camera is a type of image pickup device that causes a liquid crystal monitor to display, as a process image, an object image captured by a solid-state image pickup device such as a CCD in an imaging standby state in which a predetermined mode (such as a REC mode) is set. (through image) (a finder image) without taking shutter operation into account. In such an electronic camera, it is necessary to achieve white balance in order to more accurately reproduce the color of an object. The purpose of white balance is to display white objects in white, even if the image was taken under light with a different color temperature. The gain of the image signal output from the solid-state image pickup device is controlled for each of the color components R, G, and B according to the ima...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N9/73G03B7/00G03B15/03G03B15/05H04N9/04H04N101/00
CPCH04N9/735H04N23/88H04N9/73H04N23/00
Inventor 汤山将美
Owner CASIO COMPUTER CO LTD
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