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Image sensor capable of generating HDR (High Dynamic Range) images by shooting for once

An image sensor, high dynamic range technology, applied in the field of image sensors, can solve problems such as long time, and achieve the effect of eliminating the generation of moire fringes and improving the imaging effect.

Active Publication Date: 2014-03-26
SHANGHAI INTEGRATED CIRCUIT RES & DEV CENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] However, multiple photos need to be taken to combine multiple photos into one HDR photo, so it will inevitably take a long time and a lot of system resources to complete.

Method used

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  • Image sensor capable of generating HDR (High Dynamic Range) images by shooting for once
  • Image sensor capable of generating HDR (High Dynamic Range) images by shooting for once
  • Image sensor capable of generating HDR (High Dynamic Range) images by shooting for once

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Embodiment Construction

[0025] In order to make the content of the present invention clearer and easier to understand, the content of the present invention will be further described below in conjunction with the accompanying drawings. Of course, the present invention is not limited to this specific embodiment, and general replacements known to those skilled in the art are also covered within the protection scope of the present invention.

[0026] figure 1 It is a schematic plan view of the image sensor in Embodiment 1 of the present invention. Such as figure 1 As shown, the image sensor includes a plurality of pixel units 101 with binning and splitting modes, each pixel unit includes a plurality of pixel groups, and each pixel group includes a plurality of pixels.

[0027] In this example, figure 1 The arrangement of the pixel units 101 in the middle adopts the bayer pattern as an example, and each pixel unit 101 includes a red sub-pixel group 111 , two green sub-pixel groups 121 , and a blue sub-...

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Abstract

The invention discloses an image sensor capable of generating HDR (High Dynamic Range) images by shooting for once, which comprises a plurality of pixel units and a plurality of switching control circuits, wherein each pixel unit comprises a plurality of pixel groups; each pixel group comprises at least one first pixel and a plurality of second pixels of which the number is greater than that of the first pixels; the switching control circuits are correspondingly connected with the plurality of pixel groups; and the switching control circuits are used for sequentially outputting signals of photosensitive units of the first pixels and signals of photosensitive units of the second pixels of the selected pixel group at the same exposure time so as to respectively generate low photosensitive images and high photosensitive images at the same exposure time. According to the invention, the HDR images can be generated by shooting for once, so that system resources are saved.

Description

technical field [0001] The invention relates to the field of image sensors, in particular to an image sensor capable of obtaining high dynamic range images through a single shot. Background technique [0002] The image sensor is an important part of the camera. In traditional cameras, the image sensor is realized by film, while in modern digital cameras, the image sensor is realized by CMOS or CCD image sensor. [0003] For film sensors, due to the randomness of film silver halide photosensitive grains, when a film sensor is used to shoot an object, that is, the object is composed of regular lines or graphics, but no moiré fringes will occur. Generally speaking, Moire fringes are the visual result of interference between two lines or two objects at a constant angle and frequency. When the human eye cannot distinguish the two lines or two objects, it can only see the interference Pattern, this optical phenomenon is Moire fringe. [0004] It is worth noting that for digital...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/374H04N5/3745
Inventor 李琛康晓旭
Owner SHANGHAI INTEGRATED CIRCUIT RES & DEV CENT
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