Image data processing method and device for image sensor

Abstract

In order to solve the problem of high storage overhead in image data processing of the conventional image sensor, the invention provides an image data processing method and an image data processing device for an image sensor. The image data processing method comprises the following steps of: a, acquiring image information in a row scanning and sampling mode, and caching the image information by using a row as a unit; b, when the predetermined conditions are met, suspending the acquisition of the image information, and compressing the cached image information; and c, after the compression is finished, outputting the compressed image information, recovering the acquisition of the image information, and repeating the steps a, b and c. In the invention, the image data processing device only needs to cache the image information sampled and acquired before compression, and does not need to cache new image information during compression. Therefore, the requirement for the storage capacity of a cache module is greatly reduced, and the image data processing cost can be effectively reduced.

Description

technical field [0001] The present invention relates to the technical field of image sensing, in particular to an image data processing method and device of an image sensor. Background technique [0002] An image sensor is a semiconductor device that converts optical signals into electrical signals. Image sensors are generally classified into two categories: Charge Coupled Device (CCD) and Complementary Metal Oxide Semiconductor (CMOS) image sensors. CCD image sensors have the advantages of low read noise, large dynamic range, and high response sensitivity. However, CCD image sensors have high power consumption and complex manufacturing processes, making it difficult to achieve single-chip integration with peripheral circuits. [0003] The CMOS image sensor adopts the same CMOS technology as the signal processing circuit, which can integrate the CMOS image sensor and the signal processing circuit outside the sensor on the same chip. Compared with CCD image sensors, CMOS im...

AI Technical Summary

Problems solved by technology

[0007] In this case, in order to cooperate with the compression process, it is necessary to integrate a sufficient capacity of storage space in the image data processing device of the image sensor, which results in huge storage overhead

In particular, the line resolution of high-resolution image sensors is getting higher and higher, and the storage cost of image sensors has also increased sharply.

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