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Image processing method and image processing device

An image processing, image technology, applied in the field of communication, can solve the problems of color, brightness, contrast distortion and so on

Active Publication Date: 2013-03-13
HUAWEI TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] In view of this, aiming at the defects in the prior art, the present invention provides an image processing method and device for solving the problem of severe distortion of color, brightness and contrast of the image obtained from Raw data in the prior art

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Embodiment Construction

[0026] In order to make the object, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Apparently, each of the following embodiments is only a part of the present invention. Based on the following embodiments of the present invention, even if those skilled in the art do not make creative work, they can obtain other technical features that can solve the technical problems of the present invention and realize the technical effects of the present invention by equivalently transforming some or even all of the technical features. Embodiments, and these transformed embodiments obviously do not depart from the disclosed scope of the present invention.

[0027] The industry has also proposed a method for synthesizing HDR based on Raw data. In this method, the exposure time ratio of multiple exposu...

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Abstract

The invention provides an image processing method and an image processing device. The image processing method comprises steps of collecting at least two exposure frames of different brightness of the same scene in different exposure times; for every exposure frame, combining raw data units which are subjected to repeated permutation in the exposure frame, and obtaining the combined first brightness data; and acquiring correction parameters of all exposure frames in accordance with all first brightness data, conducting weighting for all exposure frames in accordance with correction parameters, and obtaining a High Dynamic Range (HDR) image of corrected raw data. By the aid of the method, the problem of serious distortion of color, brightness and contrast of the image acquired from Raw data through the prior art is solved.

Description

technical field [0001] Embodiments of the present invention relate to communication technologies, and in particular to an image processing method and device. Background technique [0002] Research on High Dynamic Range (HDR) imaging based on multi-frame exposure synthesis has been very mature. For example, in the consumer market, iPhones integrate HDR camera functions. Simpler HDR imaging is also included in some chips' Android reference platforms. [0003] At present, whether it is a surveillance camera for professional applications or a mobile phone camera for the consumer market, CCD or CMOS image sensors are used to capture the light signal in the scene and convert it into the original data of the digital signal (that is, Raw data). A series of digital signal pre-processing technologies (Image Signal Processing, referred to as ISP) are processed and transformed into the final video signal (usually in RGB format or YUV format) suitable for human eyes. [0004] Raw data...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N9/64G06T5/40
CPCG06T2207/20208G06T2207/10016H04N5/2356H04N5/2355G06T5/50G06T2207/10144G06T5/009G06T2207/10024H04N23/741H04N23/743G06T5/92H04N25/60
Inventor 陈海张雁
Owner HUAWEI TECH CO LTD
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