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Method and device for enhancing infrared image quality

An infrared image and quality technology, used in image enhancement, image data processing, instruments, etc., can solve the problems of increased data volume and processing difficulty in image processing, inconsistent detector array responsivity, and reduced infrared image quality. Convenient processing, good practicability, and the effect of reducing the amount of data and difficulty

Inactive Publication Date: 2007-09-26
INST OF OPTICS & ELECTRONICS - CHINESE ACAD OF SCI
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Problems solved by technology

However, due to the limitation of the manufacturing process, the responsivity of each unit of the detector array is inconsistent, which affects the imaging quality
On the one hand, due to the inherent non-uniformity of the infrared focal plane detector, the infrared image has non-uniformity. People have studied more about the correction of this non-uniformity, and the algorithm is relatively mature; on the other hand, due to the infrared focal plane detection The impact of the inconsistency of the detector on the time response, when the infrared focal plane detector works for a long time, cell-like stripes and blocky spots will appear in the background of the infrared image, resulting in a decline in the quality of the infrared image, which becomes a non-negligible factor in image processing , which increases the amount of data and the difficulty of processing for image processing, and affects the reliability of the image

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  • Method and device for enhancing infrared image quality
  • Method and device for enhancing infrared image quality
  • Method and device for enhancing infrared image quality

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Embodiment Construction

[0018] The present invention will be further described below in conjunction with the accompanying drawings and specific implementation, but not as a limitation of the present invention.

[0019] As shown in Figure 1, the method for improving the infrared image quality of the present invention is to eliminate cellular and blocky speckles in the infrared image background, and the specific steps are:

[0020] Step 11: Calculate the upper limit and lower limit of the noise uniform area through the gray histogram of the infrared image, and then determine the noise uniform area;

[0021] Step 12: According to the uniform noise area determined in step 11, the positions of cellular and blocky speckles in the background of the infrared image are extracted, and the gray value is replaced.

[0022] As shown in Figure 2, the device for improving infrared image quality of the present invention includes the following modules:

[0023] The noise uniform area extraction module 21 is used to ...

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Abstract

This invention relates to one method to improve infrared image quality and discloses one device to improve the infrared image quality to remove infrared images background cell shapes and block spot, which comprises the following steps: through infrared image grey histogram to compute noise even area upper and down values to determine noise even area; according to the area to extract infrared image background cell shape and block spot position for replacement on grey value. This invention device comprises noise even area extraction module and spot extraction and replacement module.

Description

technical field [0001] The invention relates to a method and a device for eliminating cellular and blocky speckles appearing in the infrared image background and improving the quality of the infrared image. Background technique [0002] Infrared focal plane arrays are widely used in infrared tracking, early warning, guidance and so on. However, due to the limitation of the manufacturing process, the responsivity of each unit of the detector array is inconsistent, which affects the imaging quality. On the one hand, due to the inherent non-uniformity of the infrared focal plane detector, the infrared image has non-uniformity. People have studied more about the correction of this non-uniformity, and the algorithm is relatively mature; on the other hand, due to the infrared focal plane detection The impact of the inconsistency of the detector on the time response, when the infrared focal plane detector works for a long time, cell-like stripes and blocky spots will appear in the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T5/00
Inventor 李晓翔彭先蓉蔡敬菊
Owner INST OF OPTICS & ELECTRONICS - CHINESE ACAD OF SCI
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