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Image signal processor, image signal processing device and method, chip and terminal equipment

An image signal processing and image signal technology, applied in image communication, TV, color TV components and other directions, can solve the problem of increasing chip area, and achieve the effect of reducing equipment cost, hardware cost and hardware cost.

Active Publication Date: 2021-11-02
BEIJING SPREADTRUM HI TECH COMM TECH CO LTD
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  • Claims
  • Application Information

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Problems solved by technology

This will lead to a sharp increase in the chip area, greatly increasing the hardware cost of the ISP (Image Signal Processor, Image Signal Processor)

Method used

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  • Image signal processor, image signal processing device and method, chip and terminal equipment
  • Image signal processor, image signal processing device and method, chip and terminal equipment
  • Image signal processor, image signal processing device and method, chip and terminal equipment

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Embodiment Construction

[0041] In order to make the above objects, features and beneficial effects of the present invention more comprehensible, specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0042] HDR sensors support multiple exposures at the line-level and frame-level. Row-level exposure refers to different exposures for each row according to the needs of the current scene. At the same time, N1 rows are in long exposure, N2 rows are in medium exposure, and N3 rows are in short exposure. In one frame time, the image data of long, medium and short exposures are acquired at the same time, which shortens the data acquisition time as a whole and greatly reduces the possibility of ghost images. Frame-level exposure means that, taking frames as units, one frame exposure is completed according to certain exposure parameters, and then the exposure parameters are updated for the next frame exposure. Although the deghosting ef...

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Abstract

The invention discloses an image signal processor, an image signal processing device and method, a chip and terminal equipment. The image signal processor comprises a separation module, an RAW domain processing module and an HDR fusion module. The domain processing module comprises a first RAW domain processor corresponding to short exposure image data and a RAW domain processor corresponding to other exposure duration image data; the processor transmits the processed short exposure image data to an HDR fusion module, and other RAW domain processors write the processed exposure image data into an external memory; after the HDR fusion module receives the short-exposure image data transmitted by the first RAW domain processor, the HDR fusion module reads out image data of other exposure durations corresponding to the short-exposure image data from an external memory, carries out fusion processing on the short-exposure image data and the image data of other exposure durations corresponding to the short-exposure image data, and obtains an HDR image. According to the scheme, the chip area can be effectively reduced.

Description

technical field [0001] The present invention relates to the technical field of image signal processing, in particular to an image signal processor, an image signal processing device and method, a chip and a terminal device. Background technique [0002] In daily life, high dynamic scenes are more common. For example, when shooting people or objects by the window in an indoor scene, because the brightness outside the window is different from that inside the room, the dynamic range of brightness is quite different. At this time, when using a mobile phone to take pictures, it is easy to overexpose objects outside the window, while some details of people or objects indoors are not visible due to insufficient light. This problem also occurs in outdoor scenes and backlit environments. [0003] For high dynamic scene processing, there are generally two solutions: software and hardware. The software processing scheme controls the exposure parameters frame by frame to generate thr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/355H04N5/369
CPCH04N25/57H04N25/589H04N25/79
Inventor 王晓哲杜建国倪阳关锐杨红星
Owner BEIJING SPREADTRUM HI TECH COMM TECH CO LTD
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