ZigBee ZagHDR exposure control system and exposure control method thereof

A technology of exposure control and exposure number, applied in the parts of TV system, parts of color TV, TV, etc., can solve the problems of program disorder, affecting ZigZagHDR exposure results, different, etc., and achieve the effect of simple and clear control method.

Active Publication Date: 2019-09-10
SHANGHAI INTEGRATED CIRCUIT RES & DEV CENT
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0004] However, when different image sensors perform ZigZagHDR exposure, different exposure arrays will appear due to the different periods selected by the exposure format and the different initial exposure positions. At the same time, in the exposure process, mirroring (mirror ) and / or flip (flip) operations, therefore, the exposure arrays selected by the final image sensor for ZigZagHDR exposure are not the same
In the ZigZagHDR exposure process, the exposure array after mirroring and / or flipping operations is different from the default exposure array of the image sensor, which often causes program disorder during the processing of the default exposure array, thereby affecting the ZigZagHDR exposure result

Method used

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  • ZigBee ZagHDR exposure control system and exposure control method thereof
  • ZigBee ZagHDR exposure control system and exposure control method thereof
  • ZigBee ZagHDR exposure control system and exposure control method thereof

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Embodiment 1

[0038] Please refer to the attached figure 1 , the 4x4 size block starting from (0,0) is the same as the exposure format of the 4x4 size block starting from (4,0), (0,4), (4,4), that is, the exposure array, And so on for the rest of the blocks. Since the specific exposure array can be represented circularly in blocks of 4x4 size, and the block size of 4x4 just corresponds to the exposure array of HDRArray[4][4]. figure 1 Take (0,0) as an example: HDRArray[4][4]={{0,0,0,1},{1,1,0,1},{0,1,0,0},{ 0,1,1,1}}.

[0039] Since different image sensors adopt different ZigZagHDR exposure formats, the exposure serial number HDRPattern is designed to indicate the default exposure array of the current image sensor. Each HDRPattern corresponds to each exposure format. Before mirror and flip operations are added, pass It can be seen from the enumeration method that there are 8 different exposure arrays HDRPattern, that is, 8 different arrays, as shown in the attached figure 2 As shown, th...

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Abstract

The invention discloses a ZigBee ZagHDR exposure control system. The system comprises a top exposure storage module and a ZiagHDR exposure expression model, the top exposure storage module comprises an exposure expression array storage unit and an exposure format serial number storage unit, and exposure arrays in the exposure expression array storage unit are in one-to-one correspondence with exposure serial numbers in the exposure format serial number storage unit; and the ZigBee ZagHDR exposure expression model is connected with the top exposure storage module, receives the exposure signal,converts the exposure sequence number of the to-be-exposed device according to the exposure signal, and outputs a final exposure array. The invention provides a ZigBee ZagHDR exposure control system and an exposure control method thereof, all exposure arrays in the ZigBee ZagHDR exposure process can be effectively represented, and the control system is simple in structure and is used for developing various modules in a ZigBee ZagHDR exposure mode.

Description

technical field [0001] The invention belongs to the field of digital image processing, in particular to a ZigZagHDR exposure control system and an exposure control method thereof. Background technique [0002] The pixel bit width of a digital image is limited, usually 8bit, 10bit or 12bit, and the corresponding numerical ranges are 0~255, 0~1023, 0~4095, respectively, and the pixel value directly corresponds to the brightness of the image (for grayscale images, for RGB and other color images, the brightness can also be obtained by single-channel linear transformation); therefore, the value range corresponds to the dynamic range of brightness that can be expressed, however, the range of brightness changes in nature is far beyond the range that can be expressed by pixel values, and at the same time The brightness range that the human eye can distinguish can also cover 10 -3 lux~10 3 lux, even wider, in scenes with strong brightness contrast or brightness changes, ordinary di...

Claims

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Application Information

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IPC IPC(8): H04N5/235
CPCH04N23/70H04N23/743
Inventor 周涛李琛王鹏飞王修翠余学儒
Owner SHANGHAI INTEGRATED CIRCUIT RES & DEV CENT
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