53results about How to "Reduce the number of images" patented technology

The invention discloses a high dynamic-range synthetic imaging method and device, aiming at providing a method for synthesizing two pieces of images with lower dynamic ranges into a piece of image with higher dynamic range. The high dynamic-range synthetic imaging method comprises the steps of: shooting a same scene at different exposure time to obtain two pieces of different exposed images; respectively converting the two different exposed images to be in exposure value spaces according to response curves of a shooting device; weighted-synthesizing scene brightness which is calculated by utilizing exposure value and exposure time according to brightness of the two pieces of images; and simulated-exposing the synthesized scene brightness through the response curves to obtain the image with high dynamic range. According to the invention, two pieces of different exposed images are synthesized, and thus the difficulty of image alignment is reduced; moreover, the operand and the required storage space in the processing procedure are reduced, so that the high dynamic-range synthetic imaging method and device can be applied to a small-sized handheld device; and at the same time, the image with high dynamic range is rich in details at light parts and shadow parts, and the color and the details of the image are in conformity with those of the original scene.

The embodiment of the present application discloses an image processing method, device, electronic equipment, and storage medium. The method includes the following steps: by determining the target area in the shooting picture of the first camera; acquiring multiple non-overlapping areas in the shooting picture multiple depths of field; acquire m images of the shooting picture through the first camera, select n target images from the m images according to multiple depths of field, and synthesize the n target images to obtain the first high dynamic range image, so, On the premise of ensuring the HDR image processing effect, the number of composite images can be reduced, thereby reducing system power consumption and frame delay, thereby meeting the user's demand for HDR image processing effect and improving the user's shooting experience.

The invention discloses an image based method for identifying railway overhead-contact system bolt support identifying information. According to the method, a digital image processing method is used for automatically identifying bolt support numbers and kilometer posts in railway overhead-contact system touring images. The method comprises the steps of 1) conducting coarse positioning on bolt supports; 2) conducting fine positioning on bolt supports; 3) conducting bolt support number detection and digital dividing; 4) conducting kilometer post detection and digital dividing; and 5) conducting offline training and online identifying on bolt support numbers and kilometer post numbers. The method can efficiently and automatically identify bolt support numbers and kilometer posts of a railway overhead-contact system, is applicable to routing inspection of overhead-contact systems of high-speed railways and conventional railways, can effectively help inspectors to quickly position specific bolt supports, can reduce the number of images which are required to be interpreted manually and can improve the working efficiency.

The invention relates to a sequence CT image pelvis contour extraction method based on keyframe tagging. The method comprises the steps of conducting preprocessing on CT images; obtaining a mask of an area-of-interest; conducting convolution on the mask and an initial image to obtain intermediate images; ranking the intermediate images according to a spatial sequence, selecting a pixel difference value of two adjacent frames of CT images as a feature distance, regarding two adjacent frames of which the feature distance is smaller than a given threshold value as similar frames, and conducting preliminary screening on a CT sequence to obtain a candidate keyframe sequence; conducting fine screening on the candidate keyframe sequence; tagging keyframe bone contour in an interactive mode; adopting a GVF model to extract the bone contour of the CT images of all layers.

The invention discloses a precise positioning method for a target reporting system, which comprises: overlapping a thermal imaging sensor and an image sensor for framing; using the thermal imaging sensor to continuously acquire thermal images of target paper, and analyzing the thermal images to obtain initial coordinate information P of the impact point and time information T; use a visible light image sensor to continuously acquire image H, select several frames before T and after T in image H, a group of image information I centered on P; analyze I to obtain precise coordinate information K of the impact point; Extract the target paper image feature information in the image H; obtain the target report information according to the precise coordinate information K and the target paper image feature information. Further, a target reporting system is also disclosed. The invention can effectively eliminate false alarms generated when other non-bullets penetrate the target paper, and the analysis difficulty and required time are greatly reduced, the implementation is simpler, the use is more convenient, and the acquisition of target information is more accurate and reliable.

The invention discloses a detection device and method for the side surface of a cylindrical object based on a turntable assembly line. The device includes a line scan camera, a turntable motor, a spin motor, a turntable motor encoder and a spin motor encoder, a PC host and a PLC controller. When the spin device of the shooting station completes one revolution, the line scan camera completes one frame The image is collected and sent to the PC host. The method includes the following steps: S1: start the line scan camera, and set parameters; S2: start the turntable motor; S3: judge whether the detected object has reached the detection station according to the pulse signal sent by the turntable motor encoder, and if the result is no, continue Rotate, if the result is yes, send a spin signal to control the rotation of the detected object, and at the same time send a signal for collecting images; S4: send the collected images to the host PC. The device and method for detecting the side surface of a cylindrical object based on a turntable assembly line have the advantages of low cost and high production efficiency.