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42results about How to "Good depth of field" patented technology

Paraxial virtual image display system with superwide vertical field angle

The invention discloses a paraxial virtual image display system with a superwide vertical field angle, belonging to the technical field of virtual image display of a flight simulator. The display system comprises a projector, a projection screen and a spherical reflector, wherein the projection screen is a rear projection screen, the distance between the projection screen and the spherical reflector is less than twice focal length of the spherical reflector, the projection screen is shaped as a tire surface, the rotation axis of the projection screen and the rotation axis of the spherical reflector are same straight line, the radius of the projection screen is less than the distance from the projection screen to the rotation axis, the sphere center of the spherical reflector is higher than the upper end surface of the spherical reflector, and the circle center of the projection screen is higher than the sphere center of the spherical reflector. The vertical field angle of the paraxial virtual image display system can reach 60 degrees, and different requirements of flight simulation training are met on the premise that the characteristics of high field depth, strong three-dimensional sense and the like of the paraxial virtual image display system are ensured.
Owner:中国人民解放军95995部队

Virtual three-dimensional (3D) linkage display dispatching system for coal mining face

InactiveCN102619541AHave a clear understanding of the work situationAchieve controllable visualizationMine roof supportsEnvironment effectDepth of field
The invention discloses a virtual three-dimensional (3D) linkage display dispatching system for coal mining face, and belongs to a virtual 3D linkage display system. A front beam, a main beam and a rear thrust beam of the virtual 3D linkage display dispatching system are connected in sequence. A front beam sensor and a front beam oil cylinder are connected to the bottom surface of the front beam. A first support oil cylinder and a second support oil cylinder are connected between the main beam and a walking bottom plate. A first sensor is connected to the bottom surface of the first support oil cylinder, and a second sensor is connected to the bottom surface of the second support oil cylinder. A control box is connected to the middle part of the second support oil cylinder. A rear seat is connected to the rear part of the walking bottom plate. A rear seat support is connected between the walking bottom plate and the rear seat. The virtual 3D linkage display dispatching system has the advantages that: the technology is free from the influence of the environment of the coal mining face, wide in viewing angle, good in depth of field and practical; the requirements of fully mechanized mining can be met, the specific working conditions of the coal mining face can be known in real time, and the conditions of a job site are displayed in a 3D virtual display picture form; and the system is simple in working and mounting design and high in visualization degree, and dispatching commanding capability is improved.
Owner:徐州中矿厚德物联科技有限公司

A method for dynamic image quality adjustment

The present invention provides a method for dynamically adjusting image quality, including steps, A1. Take the current frame, the frames of the first set value before it, and the frames of the second set value after it, and for each frame of image The brightness of the pixel point at the set position of the set value is carried out, and the loop detection of the number of times of the third set value is carried out to calculate the average value of the average level of the dynamic image quality; A2. Divide the brightness interval into the fourth set value level, and divide the The pixel points of the image are sampled, the brightness of the obtained pixel points is measured, and statistics are carried out with the brightness level of the fourth set value, and the ratio of the pixel points whose brightness does not reach the average value to all the sampled pixel points is calculated; A3. The numerical value is multiplied by the proportional numerical value to obtain the average correction value of the average dynamic image quality; A4. Use the input image information to superimpose the correction value as the output image information. From the level of image decoding, the overall image quality level is improved, and the problem of life damage of the screen caused by backlight changes is eliminated.
Owner:SHENZHEN SKYWORTH RGB ELECTRONICS CO LTD

Overhead rail type inspection robot based on binocular vision

PendingCN114029919AGood depth of fieldAccurate video judgment resultsManipulatorComputer graphics (images)Engineering
The invention relates to an overhead rail type inspection robot based on binocular vision. The overhead rail type inspection robot comprises a rail assembly and an actuating part arranged on the rail assembly in a sliding mode, a sliding frame is arranged on the rail assembly in a sliding mode, the actuating part comprises a control box arranged on the sliding frame, a power supply is arranged at the bottom of the control box in a suspended mode. A left-eye camera and a right-eye camera are respectively arranged on two sides of the power supply, the left-eye camera is configured to acquire a left-eye image frame, the right-eye camera is configured to acquire a right-eye image frame, and the control box is configured to pre-process the left-eye image frame and the right-eye image frame and synthesize the pre-processed left-eye image frame and the pre-processed right-eye image frame into a video stream. According to the overhead rail type inspection robot based on binocular vision, image information of an inspection area can be collected through the left-eye camera and the right-eye camera respectively, then the two paths of image information are preprocessed and then synthesized into one path of video stream, and the video stream is a three-dimensional video stream containing the left-eye image frame and the right-eye image frame.
Owner:BEIJING HUANENG XINRUI CONTROL TECH

Monitoring camera with day and night double apertures

The invention discloses a monitoring camera with day and night double apertures. The monitoring camera comprises a Fresnel lens, a driven infrared sensor, an automatic switching aperture lens, an image sensor, an infrared auxiliary illumination circuit and an environment brightness detection circuit, and further comprises a low-power-consumption MCU (Micro-programmed Control Unit) and a DSP (Digital Signal Processor) processing chip, wherein the automatic switching aperture lens is arranged in a manner being aligned to the image sensor and the automatic switching aperture lens comprises a lens assembly and a switchable aperture pair; the switchable aperture pair is provided with a daytime aperture and a nighttime aperture, which have different apertures; the aperture of the daytime aperture is smaller than that of the nighttime aperture; an infrared filter is arranged on the surface of the daytime aperture; at the daytime, the daytime aperture is aligned to a lens of the lens assembly; at the nighttime, the switchable aperture pair can be switched into the nighttime aperture; and the nighttime aperture is aligned to the lens of the lens assembly. The monitoring camera with the day and night double apertures disclosed by the invention realizes automatic induction shooting and night vision functions and effectively overcomes the contradiction between daytime field depth and nighttime brightness of a fixed aperture monitoring camera.
Owner:广东恩威视科技有限公司

A paraxial virtual image display system with super large vertical field of view

The invention discloses a paraxial virtual image display system with a superwide vertical field angle, belonging to the technical field of virtual image display of a flight simulator. The display system comprises a projector, a projection screen and a spherical reflector, wherein the projection screen is a rear projection screen, the distance between the projection screen and the spherical reflector is less than twice focal length of the spherical reflector, the projection screen is shaped as a tire surface, the rotation axis of the projection screen and the rotation axis of the spherical reflector are same straight line, the radius of the projection screen is less than the distance from the projection screen to the rotation axis, the sphere center of the spherical reflector is higher than the upper end surface of the spherical reflector, and the circle center of the projection screen is higher than the sphere center of the spherical reflector. The vertical field angle of the paraxial virtual image display system can reach 60 degrees, and different requirements of flight simulation training are met on the premise that the characteristics of high field depth, strong three-dimensional sense and the like of the paraxial virtual image display system are ensured.
Owner:中国人民解放军95995部队
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