Edge strengthening method and device of Bel image and color image pick-up system

Abstract

An edge intensification device of Bel image is prepared as storing original Bell image data into buffer storage and carrying out brightness character value calculation and edge character analysis by directly fetching out original Bell image data from buffer storage, outputting edge character data and intensifying edge of original Bell image data according to analyzed edge character data.

Description

technical field [0001] The present invention relates to digital signal processing, especially to a method and device for edge enhancement of Bayer images. Background technique [0002] To present the true color of a scene, it is generally necessary to use three image sensors (image sensors) to respectively record the three color values ​​of each pixel (pixel). However, in order to reduce hardware size and cost, most image acquisition systems only use a single image sensor with a color filter array. Therefore, only one color is captured per pixel, so the image capture system must reconstruct the missing other colors for each pixel. Figure 1A That is, Bell image data that contains only single color data for each pixel. [0003] Figure 1B It is a hardware architecture block diagram of a known image capture system. refer to Figure 1B The constituent units of the image capture system 100 mainly include an image capture unit 101, a buffer (buffer) 103, an interpolation (int...

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Problems solved by technology

[0008] However, the above two methods are both applied to image data that has been interpolated, so calculating brightness values ​​and judging edges will consume a lot of memory space and cause timing delays (delay)

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