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Image capturing apparatus and control method thereof

一种摄像装置、控制方法的技术，应用在图像通信、电视、彩色电视的零部件等方向，能够解决未公开RAW图像数据等问题，达到抑制校正质量的下降、降低处理量的效果

Active Publication Date: 2015-11-25
CANON KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the aforementioned Japanese Patent Laid-Open No. 2009-147743 and Japanese Patent Laid-Open No. 2007-166551 disclose techniques for performing enlarging processing on RAW image data, there is no disclosure for applying enlarging processing to RAW image data including the OB area. image data technology

Method used

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  • Image capturing apparatus and control method thereof
  • Image capturing apparatus and control method thereof
  • Image capturing apparatus and control method thereof

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0022] Hereinafter, a description will be given as an example of an image pickup apparatus in which the present invention is applied to each frame of a video signal capable of recording uncompressed or losslessly compressed RAW format image data (hereinafter "RAW image data") for a given camera. However, the present invention is not limited to video cameras, and can be applied to any electronic device capable of recording RAW image data. For example, such electronic devices may include mobile phones, game devices, tablet terminals, personal computers, and the like.

[0023] In the present embodiment, it is assumed that pixels in an optical blackbody region (hereinafter, "OB region") are pixels for correcting a signal output from an image sensor when the image sensor is in a light-shielding state. Meanwhile, "adjustment processing" means, in order to switch the aspect ratio, change the zoom magnification by digital zoom, change the extraction position for digital image stabili...

no. 2 example

[0073] Next, a second embodiment will be described. In the adjustment processing according to the first embodiment, the adjustment processing unit 121 retains all the pixels in the OB area of ​​the RAW image data; however, in the adjustment processing according to the second embodiment, in the adjustment processing on the effective pixel area Eliminate the OB area. The processing is the same except for the processing of controlling the settings for the adjustment processing, and the functional structure of the video camera 100 according to the present embodiment is the same as in the first embodiment; likewise, repeated description will be omitted, and attention will be placed on different points superior.

[0074] will refer to Figure 7A and Figure 7B RAW image data according to the present embodiment is described. Figure 7A Schematically exemplified by the Figure 3A The image shown is digitally zoomed to perform adjustment processing to generate RAW image data. In ...

no. 3 example

[0088] Next, a third embodiment will be described. In the third embodiment, for example, in the case where the content of the adjustment request is aspect ratio switching, the adjustment processing performed on the OB area is controlled in accordance with the details of the adjustment request. The processing is the same except for the processing of controlling the settings for the adjustment processing, and the functional structure of the video camera 100 according to the present embodiment is the same as in the first embodiment; likewise, repeated description will be omitted, and attention will be placed on different points superior.

[0089] Figure 9 exemplifies the adjustment processing according to the present embodiment, and Figure 8 The difference from the processing shown in is the processing performed by the control unit 122 in S901.

[0090] In S901, the control unit 122 determines whether the operation content of the adjustment request is aspect ratio switching....

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Abstract

An image capturing apparatus comprises an image sensor in which pixels including a correction pixel region and an effective pixel region are arrayed two-dimensionally; and a creating unit configured to create uncompressed or losslessly-compressed image data from signals acquired from the effective pixel region and the correction pixel region, wherein in the case where a resizing process is to be carried out on the effective pixel region included in the image data, the creating unit does not carry out the resizing process on the correction pixel region.

Description

technical field [0001] The invention relates to an imaging device and a control method thereof. Background technique [0002] Many imaging devices such as video cameras employ a method in which a video signal generated by an image sensor is converted into digital data, the digital data is subjected to various signal processing and then encoded using a lossy compression technique, and the encoded data is recorded in a recording medium. However, some professional cameras such as those used for filming employ a method in which a video signal generated by an image sensor is recorded after being subjected to lossless compression, or is recorded as image data in a RAW format which is an uncompressed format (hereinafter, referred to as "RAW image data"). This method enables execution of a development process in which various parameters can be specified by the user after recording, so that the user can generate a video according to the user's will. [0003] When recording RAW imag...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/232H04N5/225H04N23/75H04N25/42
CPCH04N1/393H04N1/4076H04N25/443H04N25/633H04N23/69H04N25/63
Inventor 上村英孝
Owner CANON KK
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