Transient flame detection method based on image processing

Abstract

The invention discloses a transient flame detection method based on image processing. A high-speed camera is adopted to shoot a transient flame video and completely records the dynamic development process of transient flame; an overall distribution image of the transient flame is obtained in an image superposition method; an image enhancement method according with a transient flame color space distribution rule is put forward, a transient flame area is brightened, and a background area is darkened; image processing methods such as image filtering, image enhancement, image segmentation and image contour extraction are used comprehensively to extract the transient flame area, and the area, the perimeter, the largest diameter, the average diameter, average optical density and other parameters of the transient flame area are calculated to provide effective data and technical support for development and performance testing of artillery, combustion explosives, gun propellants and the like.

Description

technical field

[0001] The invention belongs to the field of flame detection, and in particular relates to a method for extracting a transient flame area and measuring flame parameters by using a digital image processing method. Background technique

[0002] After detonating or firing ammunition for airtight explosives, artillery and other equipment, transient flames will inevitably be formed in the explosives and muzzle, reflecting incomplete combustion of the gunpowder and a decrease in energy utilization, thus affecting the actual application performance of such equipment , in order to improve these influences of transient flames, it is necessary to conduct in-depth research on transient flames, so how to detect transient flames and judge the size and strength of flames are very important. At present, the flame test methods at home and abroad mainly include the camera door B waiting method and the rotary drum photography method. The camera B door waiting method takes the ...

Examples

Embodiment Construction

[0033] The following takes a certain transient flame video shooting and analysis process as an example to illustrate the specific implementation method, wherein the transient flame generating device is a cannon.

[0034] Step 1: Take a video of the transient flame. The high-speed camera is placed at an appropriate distance from the muzzle, and the entire transient flame area is required to cover 2 / 3 or more of the field of view of the high-speed camera. The camera is perpendicular to the firing direction of the muzzle, and a calibration rod is set up in the opposite direction of the muzzle firing direction. It is used to calibrate the image pixel and the actual size. The high-speed camera is used to shoot the transient flame video. When the shell is fired, the high-speed camera is triggered to shoot. Because the high-speed camera has a high frame rate, the first frame or even several frames in the video are not included. Background image of transient flame I B , the video con...

technical field

[0001] The invention belongs to the field of flame detection, and in particular relates to a method for extracting a transient flame area and measuring flame parameters by using a digital image processing method. Background technique

[0002] After detonating or firing ammunition for airtight explosives, artillery and other equipment, transient flames will inevitably be formed in the explosives and muzzle, reflecting incomplete combustion of the gunpowder and a decrease in energy utilization, thus affecting the actual application performance of such equipment , in order to improve these influences of transient flames, it is necessary to conduct in-depth research on transient flames, so how to detect transient flames and judge the size and strength of flames are very important. At present, the flame test methods at home and abroad mainly include the camera door B waiting method and the rotary drum photography method. The camera B door waiting method takes the ...

Examples

Embodiment Construction

[0033] The following takes a certain transient flame video shooting and analysis process as an example to illustrate the specific implementation method, wherein the transient flame generating device is a cannon.

[0034] Step 1: Take a video of the transient flame. The high-speed camera is placed at an appropriate distance from the muzzle, and the entire transient flame area is required to cover 2 / 3 or more of the field of view of the high-speed camera. The camera is perpendicular to the firing direction of the muzzle, and a calibration rod is set up in the opposite direction of the muzzle firing direction. It is used to calibrate the image pixel and the actual size. The high-speed camera is used to shoot the transient flame video. When the shell is fired, the high-speed camera is triggered to shoot. Because the high-speed camera has a high frame rate, the first frame or even several frames in the video are not included. Background image of transient flame I B , the video con...

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