Method for selecting image data source in optical instrument

Abstract

The invention relates to a method for selecting an image data source in an optical instrument, which comprises the following steps of: a, providing an image processing device, and capturing an image data source from an optical sensor; b, detecting and filtering intrinsic noise signals contained in the image data source; c, extracting the exposure time Te of image data after the intrinsic noise signals are removed and calculating the gray average value RTH of the image data by the image processing device; and d, when the obtained image data exposure time Te is smaller than the set time TH1 or the gray average value RTH of the image data is greater than a set value TH2, enhancing the contrast of the image data by the image processing device. The method provides accurate positioning for subsequent image processing, reduces the processing time of the image data, improves the accuracy of image data processing, has simple processes, and is safe and reliable.

Description

technical field [0001] The invention relates to a method for selecting image data, in particular to a method for selecting an image data source in an optical instrument, and belongs to the technical field of image processing. Background technique [0002] At present, the image recognition and motion recognition of the image data source firstly carry out contrast enhancement on the collected original image, and the subsequent processing of the image is all calculated and operated on the enhanced image. Because, when the original image is enhanced, the contrast of the original image is not considered, and the contrast of the image is always enhanced, resulting in the loss of some original characteristics of the original image. This defect is especially reflected in the optical image captured under the dark background. obvious. The feature of the image captured by the dark background is that some pixels are brighter, while most of the pixels are darker, the dynamic range of th...

AI Technical Summary

Problems solved by technology

Because, when the original image is enhanced, the contrast of the original image is not considered, and the contrast of the image is always enhanced, resulting in the loss of some original characteristics of the original image. This defect is especially reflected in the optical image captured under the dark background. obvious

The characteristics of the image captured by the dark background are that some pixels are brighter, while most of the pixels are darker, the dynamic range of the pixel gray value is large, and the contrast of the whole frame image is higher. If the image enhancement method is used at this time, will more or less destroy the original characteristics of the image, and the most damaged area is the edge pixels of the image, which makes the calculation deviate from

Images