Automatic deviation correction method
AssigneeHuntercraft Limited
InventorsDanyang Li, Ming Chen, Yayun Gong
Life of this patent
Estimating the term…
Abstract
An automatic deviation correction method, which is applied to a shooting sighting telescope. The automatic deviation correction method includes the following steps: converting an optical image obtained by a shooting sighting telescope into an electronic image, extracting a target paper area from the electronic image, and performing pixel-level subtraction on the target paper area and an electronic reference target paper to detect points of impact, calculating a center point of each of the points of impact to obtain a deviation of the center point of each of the points of impact and a center point of the target paper area; and inputting the deviation into the shooting sighting telescope for automatically correcting subsequent shooting.
Claims9
An automatic deviation correction method, which is applied to a shooting sighting telescope, the shooting sighting telescope sights a target object to acquire an optical image of the target object, characterized by comprising the following steps:
- converting an optical image obtained by a shooting sighting telescope into an electronic image;
- extracting a target paper area from the electronic image;
- performing pixel-level subtraction on the target paper area and an electronic reference target paper to detect points of impact;
- calculating a center point of each of the points of impact to obtain a deviation of the center point of each of the points of impact and a center point of the target paper area;
- and
- inputting the deviation into the shooting sighting telescope for automatically correcting subsequent shooting,
- wherein performing perspective correction on the target paper area after the target paper area is extracted corrects an outer contour of the target paper area to a circular contour, and point of impact detection is performed by using the target paper area subjected to perspective correction.
An automatic deviation correction method, which is applied to a shooting sighting telescope, the shooting sighting telescope sights a target object to acquire an optical image of the target object, characterized by comprising the following steps:
- converting an optical image obtained by a shooting sighting telescope into an electronic image;
- extracting a target paper area from the electronic image;
- performing pixel-level subtraction on the target paper area and an electronic reference target paper to detect points of impact;
- calculating a center point of each of the points of impact to obtain a deviation of the center point of each of the points of impact and a center point of the target paper area;
- and
- inputting the deviation into the shooting sighting telescope for automatically correcting subsequent shooting, wherein the extracting the target paper area from the electronic image particularly comprises:
- performing large-scale mean filtering on the electronic image to eliminate grid interference on the target paper;
- segmenting the electronic image into a background and a foreground by using an adaptive Otsu threshold segmentation method according to a gray property of the electronic image;
- and
- determining a minimum contour by adopting a vector tracing method and a geometric feature of a Freeman link code according to the image segmented into the foreground and background to obtain the target paper area.
An automatic deviation correction method, which is applied to a shooting sighting telescope, the shooting sighting telescope sights a target object to acquire an optical image of the target object, characterized by comprising the following steps:
- converting an optical image obtained by a shooting sighting telescope into an electronic image;
- extracting a target paper area from the electronic image;
- performing pixel-level subtraction on the target paper area and an electronic reference target paper to detect points of impact;
- calculating a center point of each of the points of impact to obtain a deviation of the center point of each of the points of impact and a center point of the target paper area;
- and
- inputting the deviation into the shooting sighting telescope for automatically correcting subsequent shooting,
- wherein the performing pixel-level subtraction on the target paper area and the electronic reference target paper to detect points of impact comprises:
- performing pixel-level subtraction on the target paper area and the electronic reference target paper to obtain a pixel difference image of the target paper area and the electronic reference target paper;
- and
- wherein a pixel difference threshold of images of a previous frame and a following frame is set in the pixel difference image, and a setting result is 255 when a pixel difference exceeds the threshold, and the setting result is 0 when the pixel difference is lower than the threshold;
- and the pixel difference image is subjected to contour tracing to obtain a point of impact contour and a center of the contour is calculated to obtain a center point of each of the points of impact.
Dependencies are inferred from the claim text.