Image processing apparatus and control method therefor

A technology of an image processing device and a control method, which is applied in the directions of image data processing, image enhancement, image analysis, etc., can solve problems such as the inability to play back natural moving images, and achieve the effect of improving the operation speed.

Inactive Publication Date: 2010-03-03
CANON KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Thus, unless the frames can be continuously decoded within a predetermined time, natural moving pictures cannot be played back

Method used

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  • Image processing apparatus and control method therefor
  • Image processing apparatus and control method therefor
  • Image processing apparatus and control method therefor

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Embodiment Construction

[0092] Now, embodiments of the present invention will be described in detail with reference to the drawings.

[0093] figure 1 It is a block diagram showing the configuration of an imaging apparatus having an image processing function in an embodiment of the present invention. This embodiment takes a lens exchange type single-lens reflex digital still camera as an example of an imaging device. The present invention is also applicable to, for example, a lens exchange type digital video camera as an imaging device.

[0094] Such as figure 1 As shown, the imaging apparatus according to this embodiment mainly includes a camera body 100 and a lens exchange type lens unit 300.

[0095] The lens unit 300 includes an imaging lens 310 composed of a plurality of lenses, an aperture 312, and a lens holder 306 that mechanically connects the lens unit 300 to the camera body 100. The lens holder 306 includes various functions for electrically connecting the lens unit 300 to the camera body 100...

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Abstract

The invention relates to an image processing apparatus and a control method therefor. The image processing apparatus which corrects, based on information of a foreign substance adhered to an optical element arranged in front of an image sensor in an image capturing apparatus, a shadow of the foreign substance in the moving image data generated by performing predictive encoding by referring to image data of a different input frame, the image processing apparatus (32) comprises: a moving image decompression unit which decompresses an image of each frame by obtaining information representing a difference between frames from the moving image data; and a correction unit which corrects the information representing the difference between frames when the information representing the difference between frames that is obtained by the moving image decompression unit in correspondence with a region containing the shadow of the foreign substance represented by the foreign substance information is determined to be larger than a predetermined threshold.

Description

Technical field [0001] The present invention relates to a technique for suppressing deterioration of image quality caused by foreign matter attached to the surface of an optical element such as an optical low-pass filter in front of an image sensor such as a CCD or CMOS sensor provided in an imaging device. Background technique [0002] When the lens is detached from the camera body of a lens-interchangeable digital camera, floating dust in the air may enter the camera body. The camera includes various mechanical units that work mechanically, such as a shutter mechanism. When these mechanical units work, dust such as metal powder may be generated in the camera body. [0003] When foreign matter such as dust or dust adheres to the surface of an optical low-pass filter that is an optical element provided in front of the image sensor and forms an imaging unit of a digital camera, the shadow of the foreign matter is included in the captured image, thereby deteriorating image quality ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/217H04N5/232H04N7/26H04N7/50
CPCH04N19/00781H04N19/00151G06T2207/10016H04N7/26329H04N5/367G06T5/005H04N7/26196H04N7/26223H04N5/23209H04N19/002H04N7/26276H04N7/50H04N5/2171H04N5/23212H04N7/26111H04N7/26138H04N1/4097H04N19/00127H04N19/0026H04N19/00563H04N5/2628H04N19/0023H04N19/139H04N19/61H04N19/132H04N19/154H04N19/162H04N19/17H04N19/48H04N23/811H04N23/663G06T5/77H04N25/69H04N25/68
Inventor 池田康之
Owner CANON KK
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