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Method for acquiring highly dynamic images from image sensor, and image sensor

An image sensor and high dynamic range technology, applied in the field of image sensors, can solve the problems of multi-storage resources and consumption, and achieve the effect of multi-storage resources

Active Publication Date: 2012-09-05
BYD SEMICON CO LTD
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Problems solved by technology

The method is: perform long-time exposure on all rows of the photosensitive pixel array, obtain the long-time exposure signal of the entire frame, and store the obtained long-time exposure signal in a specific storage space; perform short-time exposure on all rows of the photosensitive pixel array , to obtain the short-time exposure signal of the whole frame; the obtained short-time exposure signal is synthesized with the long-time exposure signal stored in a specific storage space, and the high dynamic range image acquisition method based on this needs to access the exposure of the whole frame Signals consume more storage resources

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  • Method for acquiring highly dynamic images from image sensor, and image sensor
  • Method for acquiring highly dynamic images from image sensor, and image sensor
  • Method for acquiring highly dynamic images from image sensor, and image sensor

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[0046] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and examples.

[0047] figure 2 It is a schematic structural diagram of a photosensitive pixel array according to an embodiment of the present invention; image 3 It is a schematic structural diagram of a storage unit according to an embodiment of the present invention; Figure 5 It is a timing diagram of photosensitive pixel control according to the embodiment of the present invention; Figure 6 It is a flowchart of an embodiment of the present invention; as figure 2 , image 3 , Figure 5 and Figure 6 As shown, the method for obtaining a high dynamic range image in an image sensor, the image sensor includes an array of photosensitive pixels arranged in m rows and n columns, the method includes:

[0048] Long exposure time T1 and short exposure time T2 are as...

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Abstract

The invention discloses a method for acquiring highly dynamic images from an image sensor, and the image sensor. Long exposure time and short exposure time are distributed for each row of a photosensitive pixel array in the image sensor, and long exposure time signals and short exposure time signals in each row are synthesized by repeatedly utilizing the same storage space respectively. Compared with the prior art, the method saves more storage resources.

Description

technical field [0001] The invention relates to the field of image sensors, in particular to a method for obtaining high dynamic range images in the image sensor and the image sensor. Background technique [0002] The current methods for obtaining high dynamic range images are basically based on image data processing to obtain static high dynamic range images. The method is: perform long-time exposure on all rows of the photosensitive pixel array, obtain the long-time exposure signal of the entire frame, and store the obtained long-time exposure signal in a specific storage space; perform short-time exposure on all rows of the photosensitive pixel array , to obtain the short-time exposure signal of the entire frame; the obtained short-time exposure signal is synthesized with the long-time exposure signal stored in a specific storage space, and the high dynamic range image acquisition method based on this needs to access the exposure of the entire frame Signals consume more ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N5/235H04N5/335
Inventor 张小军冯卫胡文阁付璟军齐良颉彭茂
Owner BYD SEMICON CO LTD
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