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Image acquisition method for image sensor and image sensor

An image sensor and image acquisition technology, applied in the field of image processing, can solve the problems of multiple storage resources and consumption, and achieve the effect of saving storage resources

Active Publication Date: 2015-11-25
BYD SEMICON CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The problem existing in the existing technology is that the exposure signal of the whole frame needs to be stored, which consumes more storage resources

Method used

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  • Image acquisition method for image sensor and image sensor
  • Image acquisition method for image sensor and image sensor
  • Image acquisition method for image sensor and image sensor

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Embodiment Construction

[0016] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0017] like figure 1 Shown is a flowchart of an image acquisition method for an image sensor according to an embodiment of the present invention, including the following steps:

[0018] Step S101, setting the exposure time of each row of the photosensitive pixel array of the image sensor, and dividing the exposure time into multiple time periods.

[0019] In the present invention, the exposure time of each row of the photosensitive pixel array of the image sensor is divided into multiple time segments, and the time nodes between adjacen...

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Abstract

The invention provides an image acquisition method for an image sensor and the image sensor. The image acquisition method for the image sensor comprises the following steps of: setting exposure time of each line of a light-sensitive pixel array of the image sensor, and dividing the exposure time into a plurality of time slots, wherein time nodes between adjacent time slots are sectioned time slots; gradually exposing the light-sensitive pixel array, and controlling exposure charge to discharge the charge according to the pixel voltage on the sectioned time slots of each time slot; and sampling an exposure signal of the current line after the exposure time of each line in the light-sensitive pixel array is ended. The light-sensitive pixel array in the image sensor is subjected to incomplete charge discharge, nonlinear response of light-sensitive pixels on illumination is competed so as to acquire images, the exposure signal in the whole frame is not required to the stored, and the storage resources are saved.

Description

technical field [0001] The invention relates to the technical field of image processing, in particular to an image acquisition method for an image sensor and the image sensor. Background technique [0002] At present, the methods for obtaining high dynamic range images are basically based on image data processing to obtain static high dynamic range images. Specifically, first perform long-time exposure on all rows of the photosensitive pixel array to obtain the long-time exposure signal of the entire frame, and store the obtained long-time exposure signal in a specific storage space; then perform short-term exposure on all rows of the photosensitive pixel array Time exposure is used to obtain short-time exposure signals of the entire frame; finally, the obtained short-time exposure signals are combined with long-time exposure signals stored in a specific storage space to obtain high dynamic range images. [0003] The problem existing in the prior art is that the exposure si...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N5/359
Inventor 张小军傅璟军胡文阁
Owner BYD SEMICON CO LTD