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Image brightness calibration method for endoscope imaging

A technology of image brightness and calibration method, which is applied in the direction of endoscope, image communication, brightness and chrominance signal processing circuit, etc., can solve the problem of inability to achieve calibration, distribution randomness, and non-uniform radial distribution characteristics of illumination light field and other problems, to achieve the effect of reducing intraoperative risk, strong applicability, and simple operation

Inactive Publication Date: 2021-07-27
ALTON SHANGHAI MEDICAL INSTR
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Problems solved by technology

However, most disposable endoscopes have two or more light sources, and most of their illumination light fields do not have the characteristics of radially uneven distribution around the central center area, and their distribution is random, so the existing methods cannot achieve calibration

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  • Image brightness calibration method for endoscope imaging
  • Image brightness calibration method for endoscope imaging
  • Image brightness calibration method for endoscope imaging

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Embodiment Construction

[0026] In order to describe the technical content of the present invention more clearly, further description will be given below in conjunction with specific embodiments.

[0027] The image brightness calibration method of endoscopic imaging of the present invention, comprises the following steps:

[0028] S1: Insert the front end of the endoscope into the calibration box through the opening of the calibration box, set the brightness calibration value, turn on the camera and light source of the endoscope, the light source illuminates the bottom calibration plate, and the camera collects the calibration plate Calibration image on ;

[0029] S2: Analyze the brightness information of the calibration image, calculate the adjustment coefficient between the brightness calibration value and the brightness value of each pixel in the calibration image, generate a brightness calibration table, and store the brightness calibration table in the endoscope image processing unit;

[0030] ...

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Abstract

The invention relates to an image brightness calibration method for endoscope imaging. The image brightness calibration method mainly comprises the steps that the front end of an endoscope is inserted into a calibration box from an opening of the calibration box, a camera and a light source of the endoscope are turned on, the light source irradiates a bottom calibration plate, the camera collects a calibration image on the calibration plate, brightness information of the calibration image is analyzed, a brightness calibration table is generated, the brightness calibration table is stored in the endoscope image processing unit, an endoscope medical image is calibrated by using the brightness calibration table, and an endoscope image with uniform brightness is output. The device comprises a calibration box, wherein an opening is formed in the top part of the calibration box, the inner side of the calibration box is a black light-absorbing material, and the inner surface of the bottom is a white calibration plate. The image brightness calibration method is easy to operate and high in applicability, conforms to the operation scene where an endoscope needs to be used, provides a good operation image for a doctor, and reduces the risk of a patient in an operation.

Description

technical field [0001] The invention relates to the technical field of medical image processing, in particular to an image brightness calibration method for endoscope imaging. Background technique [0002] Endoscopes are in great demand in modern medicine and are important medical devices in minimally invasive surgery. As the manufacturing cost of endoscopes decreases, the usage of disposable endoscopes is gradually increasing. Due to the limited installation position of the endoscope, its illumination will be uneven, which makes the brightness of the image captured by the endoscope camera uneven, which affects the doctor's diagnosis of the lesion. Therefore, disposable endoscopes need to be calibrated for brightness before use. An existing patent has proposed a method for calibrating the saturation of the endoscope image (patent CN201780006911.7), which performs color saturation calibration for the radial uneven distribution of the endoscope illumination around the centra...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/225H04N9/77A61B1/00A61B1/04A61B1/06
CPCH04N9/77A61B1/00009A61B1/00057A61B1/04A61B1/0661H04N23/555H04N23/00
Inventor 周文举任新振王海宽尼相荣顾小刚
Owner ALTON SHANGHAI MEDICAL INSTR
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