Method for selecting image data source in optical instrument

An image data and optical instrument technology, applied in the field of image processing, can solve the problems of destroying the image characteristics, losing the original characteristics of the original image, and deviating from the operation, and achieving the effects of simple process steps, good contrast, and reduced processing time.

Active Publication Date: 2011-04-06
江苏钜芯集成电路技术股份有限公司
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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

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  • Method for selecting image data source in optical instrument
  • Method for selecting image data source in optical instrument

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[0010] The present invention will be further described below in conjunction with specific drawings and embodiments.

[0011] At present, when performing subsequent processing on the captured images, all captured images are subjected to a contrast enhancement operation. After the image contrast is enhanced, the original image will inevitably lose its original characteristics, especially the image with a dark background. Therefore, the existing image selection method will affect the subsequent operation accuracy.

[0012] Such as figure 1 As shown: in order to improve the accuracy of image data processing, reduce the time of image processing, and reduce the subsequent operation of image data due to contrast enhancement, the method for selecting image data sources of the present invention includes the following steps:

[0013] a. Provide image processing device and capture image data source from optical sensor;

[0014] The image processing device includes a DSP (digital signal process...

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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...

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Application Information

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IPC IPC(8): H04N5/357H04N5/243
Inventor 吴阳霖
Owner 江苏钜芯集成电路技术股份有限公司
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