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Image signal processing method and device

An image signal processing and image technology, applied in image data processing, image enhancement, instruments, etc., can solve problems such as image anomalies

Active Publication Date: 2015-09-23
ACTIONS ZHUHAI TECH CO
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  • Summary
  • Abstract
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  • Claims
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Problems solved by technology

[0004] The embodiment of the present invention provides an image signal processing method and device to solve the image abnormality problem caused by register cross-frame operation under the existing double buffer mechanism

Method used

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Embodiment Construction

[0083] Adopting the technical solution of the invention can effectively solve the problem of image abnormality caused by cross-frame operations of registers under the existing double buffering mechanism.

[0084] Embodiments of the present invention provide an image signal processing method and device, and preferred implementation modes of the present invention will be described in detail below with reference to the accompanying drawings.

[0085] refer to figure 2 As shown, in the embodiment of the present invention, the process of processing the image signal is as follows:

[0086] Step 200: In the current frame, the processing system determines the first adjustment parameter of the image, sets the set register to hold state, and writes the first adjustment parameter into the cache.

[0087] Preferably, before the processing system sets the set register to the released state, it will also generate a first frame indication corresponding to the first adjustment parameter, an...

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Abstract

The invention discloses an image signal processing method and device. The method comprises the steps of: in a current frame, determining a first adjusting parameter of an image, setting a set register to a hold mode and writing the first adjusting parameter into a cache; setting the set register to a release mode after the first adjusting parameter is written into the cache, and writing the first adjusting parameter stored in the cache into the set register; and carrying out adjustment on the image according to the first adjusting parameter when a next frame is started. According to the method, a hold-release function is added based on the double-buffer register, and the image abnormal problems caused by cross-frame operation of the register are avoided.

Description

technical field [0001] The invention relates to the field of image signal processing, in particular to an image signal processing method and device. Background technique [0002] An image signal processor (Image Signal Processor, ISP) processes data in units of frames. Under the existing technology, the update of the adjustment parameters (such as brightness, contrast, saturation, etc.) can only be completed within the same frame blanking period to ensure that the content in the frame remains consistent. If the adjustment parameters are updated within a frame, there will be inconsistencies between the top and bottom of the image within a frame. For example, if the above situation occurs when the brightness is adjusted, the brightness of the upper and lower screens will be inconsistent. In order to allow the adjustment parameters to be updated only during the frame blanking period, the ISP generally adopts a double buffering mechanism: the adjustment parameters to be set are...

Claims

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Application Information

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IPC IPC(8): G06T5/40
Inventor 赖钦伟孔文海
Owner ACTIONS ZHUHAI TECH CO
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