4results about How to "Exact width" patented technology

The application discloses a channel scratch depth and width determination method based on speckle domain Gaussian distribution fitting. The method is characterized in that a light guide beam and a camera are cooperated with coherent laser illumination to explore a channel, original laser speckle images in the channel are collected, Gaussian distribution fitting of speckle domains is carried out through drawing a straight line vertical to a scratch in the image, and the depth and width of the target scratch are determined. The scheme provided by the application can be applied to a specific endoscope pipeline diameter, and the depth and width of the scratch can be effectively determined.

The application discloses a machine vision target positioning method and system based on boundary frame self-adaptive adjustment, relates to the technical field of target detection and positioning, and comprises the following steps: acquiring real-time images and depth images of a current monitoring environment; inputting the real-time images into a light-weight target detection model based on an improved YOLO, identifying targets in the images and extracting target boundary frames; aligning the real-time images and the depth images, determining the depth value of each pixel point according to the coordinates of each pixel point in the target boundary frame region; based on the depth value of each pixel point in the target boundary frame region, using an adaptive width and distance measurement algorithm to distinguish target regions and background regions in the target boundary frame region, extracting the overall depth value of the target regions, determining the target distance and the target position, re-identifying the boundaries around the targets in the target boundary frame region, determining the target width and height, and thus completing target positioning. The application can realize more accurate and reliable acquisition of target positioning information.

The utility model discloses a kind of blade width auxiliary acquisition appliances, comprising: first plate body, the first plate body is used to attach to the outer surface of blade;Reference window with pre-known length size is opened on the first plate body, the length of the reference window corresponds with the width of the blade, the reference window is used to expose the widest area of blade including two sides;The surface color of the first plate body is different from the surface color of the blade.Because the length size of reference window is known, thus, with reference window as reference based on the proportion of blade relative to reference window, the width of blade exposed in reference window can be obtained more accurately, so that the influence of shooting angle, shooting position and image size on blade width is less.