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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: 2012-09-26
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] The embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals indicate the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary, and are only used to explain the present invention, and cannot be construed as limiting the present invention.

[0017] Such as 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: Set the exposure time of each row of the photosensitive pixel array of the image sensor, and divide 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 periods, and th...

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

Claims

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Application Information

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