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A polar coordinate image sensor and its image processing method

An image sensor, polar coordinate technology, applied in image communication, color TV parts, TV system parts and other directions, can solve the problem of image processors that cannot be applied to circular photosensitive areas, and achieve the effect of convenient image conversion

Active Publication Date: 2021-05-18
SHANGHAI INTEGRATED CIRCUIT RES & DEV CENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The current image sensor structure and image processing methods are not suitable for image processors with circular photosensitive areas

Method used

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  • A polar coordinate image sensor and its image processing method
  • A polar coordinate image sensor and its image processing method
  • A polar coordinate image sensor and its image processing method

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Embodiment Construction

[0024] In order to make the purpose, technical solution and advantages of the present invention clearer, the specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0025] It should be noted that, in the following specific embodiments, when describing the embodiments of the present invention in detail, in order to clearly show the structure of the present invention for the convenience of description, the structures in the drawings are not drawn according to the general scale, and are drawn Partial magnification, deformation and simplification are included, therefore, it should be avoided to be interpreted as a limitation of the present invention.

[0026] Please refer to the attached figure 1 A polar coordinate image sensor provided by the present invention includes a circular photosensitive area 2, an auxiliary circuit 4, a position sensor 3 and a data buffer memory 5, and the auxiliar...

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Abstract

A polar coordinate image sensor disclosed by the present invention includes a circular photosensitive area, an auxiliary circuit, a position sensor and a data buffer memory, and the auxiliary circuit, position sensor and data buffer memory are located outside the circular photosensitive area; wherein, The circular photosensitive area includes M pixel bars, and the pixel bar includes N pixel units. The area of ​​the pixel units on the same pixel bar increases sequentially from the center of the circular photosensitive area to the edge of the circular photosensitive area. The data buffer memory includes X frame buffer units; the frame buffer units include M rows of row data, and the row data is used to store image data in N pixel units in the pixel strip. The invention provides a polar coordinate image sensor and an image processing method thereof. The image processor has a circular photosensitive area and adopts a polar coordinate scanning method, and can be applied to circular image fields such as rolling detection balls.

Description

technical field [0001] The invention relates to the field of semiconductor integrated circuits, in particular to a polar coordinate image sensor and an image processing method thereof. Background technique [0002] The image sensor utilizes the photoelectric conversion function of the photoelectric device. Convert the light image on the photosensitive surface into an electrical signal proportional to the light image. Compared with photosensitive elements of "point" light sources such as photodiodes and phototransistors, the image sensor is a functional device that divides the light image on its light-receiving surface into many small units and converts it into usable electrical signals. Image sensors are divided into photoconductive camera tubes and solid-state image sensors. Compared with light-guided camera tubes, solid-state image sensors have the characteristics of small size, light weight, high integration, high resolution, low power consumption, long life, and low pr...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N5/341H04N5/369
Inventor 任大清
Owner SHANGHAI INTEGRATED CIRCUIT RES & DEV CENT