6 results about "Progressive scan" patented technology

The application provides a disc area structure level determination method and device and electronic equipment. A first area containing a disc area is scanned line by line to obtain OCT volume data. A center point of the first area is taken as a center to star-type sample the OCT volume data to obtain a first number of first BScan two-dimensional section image data. An initial center point of the disc area is determined, and the OCT volume data is star-type sampled with the initial center point as the center to obtain a second number of second BScan two-dimensional section image data. The structure level of the disc area is determined. The OCT volume data is obtained in a line-by-line scanning manner, which ensures a high sampling rate. The sampled data is uniform and continuous. Star-type sampling is performed on the continuous data, which can avoid jumping and errors. In addition, the initial center point of the disc area is determined through star-type sampling, and then star-type sampling is performed with the initial center point as the center, which can obtain a more accurate disc area structure level.

The application discloses a kind of based on gray extremum analysis consolidated abrasive tool surface quality detection method, method includes image acquisition and pre-processing, candidate area positioning and feature point extraction, target area boundary adaptive extraction, region screening and gray difference calculation, particle gray and spatial distribution feature quantization five main steps.Through line scanning camera, surface brightness chart and depth chart are collected, after gray enhancement and filtering pretreatment, local extreme point is extracted as candidate area by line scanning, and target boundary is adaptively generated in combination with cross neighborhood gray contrast and gradient chart dynamic threshold criterion;Effective area is screened by morphological operation and area constraint again, and gray difference is calculated to represent particle height;Finally, multidimensional quantitative evaluation is realized through gray difference histogram, protruding height statistics, nearest neighbor distance analysis and grid uniformity measurement.The application has high sensitivity, high robustness and strong adaptability, and can be embedded in industrial production line to realize automatic, non-contact and high-precision surface quality detection.

The present application relates to the technical field of scanning, and particularly relates to a control method and device of a scanner, electronic equipment and program product, the method comprising: receiving a scanning trigger instruction, wherein the scanning trigger instruction comprises a planar original scanning instruction, a real scene shooting instruction or a cooperative scanning instruction; selecting a target scanning module of the intelligent scanner according to the scanning trigger instruction, wherein the target scanning module is at least one of a contact image sensor module and a camera sensor module; sending a driving signal to the target scanning module to control the target scanning module to start and execute image scanning and output corresponding analog image signals. Non-contact line-by-line scanning and area array photographing scanning can be supported, the device can be freely switched according to the type of scanned objects, precision requirements and efficiency requirements, high-precision fine acquisition and high-speed scanning of large quantities are taken into account, and the device versatility and scene adaptability are improved.

The utility model provides a kind of width measuring device suitable for longitudinal pulling machine, including support;Support fixed installation is in the wallboard top side of longitudinal pulling machine export place;The middle part of support is fixed with detection camera;The bottom side of detection camera is provided with linear light source for diaphragm top surface lighting, linear light source is connected with lifting mechanism;Lifting mechanism makes linear light source switch in two states of being close to diaphragm or away from diaphragm;The bottom of detection camera is provided with lens, and closed mechanism is arranged on the lens;Lifting mechanism is connected with top frame by connecting frame, and push strip is fixed on top frame, and push strip is located the bottom of input end of closed mechanism. Through the cooperation of detection camera and linear light source, linear light source provides lighting for diaphragm top surface, forms obvious light and shade contrast between diaphragm and background, provides clear condition for image acquisition of detection camera;Detection camera identifies diaphragm left and right edge position through the diaphragm of transverse line-by-line scanning continuous movement, and diaphragm width can be obtained in real time and non-contact.

This invention proposes a driving method, driving circuit, and display device for a display panel. The driving method first acquires frame information to be displayed and obtains a first grayscale voltage and a second grayscale voltage for a first partial frame and a second partial frame. When the voltage difference between the two grayscale voltages exceeds a preset voltage difference, during line-by-line scanning to the second partial frame, an overdrive grayscale voltage is output to the first row of pixel units in the second partial frame for a preset output duration less than the original unit scanning time. The overdrive grayscale voltage is greater than the second grayscale voltage, thereby overcompensating the first row of pixel units in the second partial frame. After the preset output duration, the second grayscale voltage is switched to drive the pixel units in subsequent rows, avoiding overcharging of subsequent rows. This achieves consistent grayscale brightness in the second partial frame, avoids image layering, and improves the display effect.

Embodiments of the present application provide a field sequential LCD projection method, system, storage medium and electronic device, wherein the method comprises: in a display process of a frame of to-be-displayed image, controlling an LCD display screen to perform a line scanning operation according to a line-by-line scanning signal, controlling a light valve modulator to perform a partition scanning operation through a partition scanning signal according to a line scanning position of the LCD display screen, and controlling a backlight source to perform a color switching operation through a color control signal, so that a pixel row corresponding to the line scanning position on the LCD display screen displays a color corresponding to each monochrome image in a group of monochrome images. Through the present application, the technical problem that in the related art, it is impossible to reduce the cost while reducing the display color is solved, through the partition control of the light valve modulator, the accurate matching of the backlight source and the display content of the LCD display screen is realized, the color crosstalk phenomenon is reduced, and the display quality is improved.