32results about How to "Adjust contrast" patented technology

A delay compensation plate with double-refraction performance for compensating residual delay of the liquid crystal penal comprises: a combination unit composed of optical multi-layer film and polymer film, the optical multi-layer film is composed of a plurality of layers with different refractive indexes stacked with regular order. In the delay compensation plate, the surface inner delay of the delay compensation plate and the liquid crystal penal contents the following relationship: R0c/R0p is more than 1 and less than or equal to 10, wherein ROc is the surface delay of the delay compensation plate, and ROp is the surface delay of the liquid crystal penal.

The invention discloses a self-adapted image enhancement method based on a related coefficient. In the method, firstly, three low pass filter processes are performed on an original image to obtain three layers of low frequency image, and three layers of high frequency image are obtained by performing vector subtraction operation on adjacent layers of the low frequency image; secondly, relative coefficient of each layer is calculated by performing division on points of adjacent layers of the high frequency image, details and noises are separated and enhanced or inhibited via the related coefficient, and vector addition operations are performed on processed high frequency image of each layer and the third low frequency image to obtain detail-sharpened such as edge-sharpened image; and finally, visual behave optimized theory is applied on the method to perform contrast self-adapted enhanced process on the sharpened image so as to obtain enhanced desired image. The invention can separate noises and details and can self-adapt process images on various weather conditions, and the enhanced image has good texture, edge details and desired contrast.

The invention discloses an image projection display method and an optical engine. The method comprises the steps of obtaining image data of a to-be-projected display image; partitioning the to-be-projected display image according to luminance data, wherein the partitions have different luminance levels; adjusting luminous flux of an area, in a luminous flux control element, corresponding to each partition in the to-be-projected display image according to the luminance level corresponding to each partition; projecting an adjusted light beam to a surface of a DMD (Digital Micromirror Device) light valve by the luminous flux control element; and modulating the light beam and projecting the light beam into a projection lens for imaging display by the DMD light valve according to an image display drive signal of the to-be-projected display image. According to the image projection display method, the luminance distribution of a projection display image can be automatically controlled according to the luminance level of each partition of the to-be-projected display image, thereby adjusting contrast of the projection display image. The invention also provides an optical engine.

An embodiment of the invention relates to the field of image processing technologies, in particular to a method and a device for processing image rapidly. The method comprises the steps of: carrying out whitening processing on an image to be processed to obtain a whitened image; carrying out color balance processing on pixel points in the whitened image to obtain a color-balanced image; and adjusting contrast and brightness of the pixel points in the color-balanced image to obtain an adjusted image. According to the method, the image to be processed is subjected to whitening processing to achieve initial whitening of the image to be processed, then the whitened image is subjected to color balance processing, so that image color distribution is balanced, factuality of the image is increased, and the contrast and brightness of the color-balanced image are adjusted at the same time, thereby improving the influence of insufficient light on processing effect.

The invention provides a projection adjusting system and a projection adjusting method thereof. The projection adjusting system comprises an illumination module, a projection module and an iris diaphragm control module, and the illumination module projects light carrying imaging information. The projection module obtains light rays carrying imaging information and projects the light rays outwardsto a projection surface, the iris diaphragm control module comprises at least one iris diaphragm and a controller, and each iris diaphragm adjusts the aperture of at least one diaphragm under the control of the controller. The light intensity of the light projected outwards is adjusted by zooming the aperture of the diaphragm.

The invention discloses a color stereo moire imaging optical device. The device comprises a micro-text layer, the micro-text layer comprises transparent micro-text units arranged in an array, and an opaque background layer is between the transparent micro-text units; a backlight module is disposed on one side of the micro-text layer, and the backlight module provides uniform illumination for the micro-text layer; a micro-focus layer is located on the other side of the micro-text layer, the micro-focusing layer comprises a micro-focusing unit arranged in an array, and a spacer layer is arrangedbetween the micro-focusing layer and the micro-text layer; stereoscopic, colored and magnified micro-texts and micro-images can be observed by naked eyes through the micro-focusing layer. The devicecan form a color stereoscopic image, can be seen by the naked eyes, have a wide field of view, have a stereoscopic effect, and have application prospects in the fields of stereoscopic imaging and display.

The invention belongs to the field of petroleum engineering, and particularly relates to a driller displayer capable of adapting to environment changes. The driller displayer comprises a communication unit, a CPU, a driver unit, a display screen, a power supply and a light ray sensor, wherein the communication unit comprises an optical coupling isolation receiving circuit which is communicated with an interface box and receives data of the interface box; the CPU is used for processing signals received by the communication unit, carrying out encoding processing on the signals, outputting the signals to the driver unit, receiving signals from the light ray sensor in real time and controlling brightness of a backlight lamp of the LCD display screen; the driver unit receives the signals from the CPU and drives the display screen to display orientations and hole deviation angles; the display screen is used for graphical display of the orientations and the hole deviation angles; the power supply is used for supplying electricity to the other units; the light ray sensor senses intensity of ambience light rays in real time and transmits sensing signals to the CPU. Light intensity of external environment is sensed through the light ray sensor, and the contrast ratio of the screen of the displayer and the brightness of the backlight lamp are adjusted in real time.

The invention relates to a file management system and method for deep learning annotation samples. The file management system comprises a client and a server in interactive connection with the client.The client comprises a labeled sample renaming module, a labeled sample management module, a labeled sample quality inspection module and a data augmentation module, and the server comprises a database. An original annotation sample is renamed according to a certain naming mode through the annotation sample renaming module, so that a user can select basic information of the annotation sample conveniently and quickly, code analysis data does not need to be developed again, and the analysis and evaluation efficiency of the annotation sample is improved. The annotation sample management module can inquire, download and delete annotation samples in a client file management interface; and the labeled sample quality inspection module is used for inspecting and deleting labeled samples which donot meet the requirements, and the data augmentation module is used for performing data augmentation on the existing labeled samples.The deep learning training sample is rapidly cleaned in effective time, and the working efficiency is improved.

The level of a storage capacitor line is changed between two types, an H level and an L level. As a result of this change, the voltage applied to a liquid crystal is shifted so that a sufficient voltage is applied to the liquid crystal to perform a display operation. Then, at least one of two voltage levels of the storage capacitor line is used in common with the potential of at least one of plurality of voltage levels which are used in vertical driver which drives the said selection line. Furthermore, the values of the storage capacitance and parasitic capacitance for the storage capacitor line are set within a specific range.

An apparatus for simultaneously adjusting brightness and contrast of a display includes: a key (1) for receiving a luminance instruction inputted by a user; an SCM (Single Chip Microprocessor) (2) for obtaining a luminance value corresponding to the instruction, and for calculating a brightness value and a contrast value according to the obtained luminance value; an AID (Analog/Digital) converter (3) for converting the brightness value and the contrast value into respective voltage pulse signals; a signal amplifier (4) for adjusting the amplitude sizes of the voltage pulse signals, and outputting the voltage pulse signals as LVDS (Low Voltage Differential Signals); a back light controller (5) for receiving the LVDS, and controlling video output of the adjusted brightness and contrast; a display screen (6) for displaying luminance values and images according to the adjusted brightness and the contrast; and a power source (7). A related method is also disclosed.

The invention discloses a digital blind watermark making and extracting method. The method comprises the following steps that: S1, a single-color area in a picture is acquired, and if the picture contains a pure single-color area, the single-color area is directly recorded, if the picture only contains an approximate single-color area, and color fine adjustment is performed on the approximate single-color area to generate a single-color area; and S2, the found single-color area is divided into grids of N rows and M columns, the pixel of each grid is a * a, the channel color value of -2 or + 2 of the single-color area form hidden information of multiple binary numbers, wherein -2 represents the binary system 0, and + 2 represents the binary system 1. The method is simple and clear, and meanwhile, hidden information damage caused by partial post-processing of the picture is resisted to a certain extent.

The invention discloses a barrier-free website browsing system. The system comprises a vision detection module, a comprehensive analysis module, an information processing module, a voice broadcast module, a voice input module, a server and a browsing auxiliary module. Website browsing users respond to the vision test questions; the vision detection module is used for detecting vision information of a website browsing user and sending the vision information to the server for storage; the comprehensive analysis module is used for analyzing and identifying whether the sound information input by the visually impaired user logging in the browsing website is matched or not; the information processing module is used for adding different adjusting functions to websites browsed by a myopia user, acolor blindness user and a color weakness user respectively, and a website interface adjusting function is added to the myopia user through the browsing auxiliary module. And a website color matchingadjustment function is added to the color blindness user and the color weakness user through the browsing auxiliary module.

The invention relates to the technical field of anti-dazzle, and discloses an intelligent anti-dazzle system which comprises a controller, a first camera used for shooting a scene image in front of a vehicle in real time, a second camera used for shooting a human eye image of a driver and an anti-dazzle film. The anti-dazzle film comprises a substrate and a plurality of electrically-controlled shading units arranged on the substrate in a dot matrix mode, and the light transmittance and the polarization rate of the shading units are adjustable. The controller is used for receiving a scene image shot by the first camera and a human eye image shot by the second camera, identifying a strong light area position in the scene image, and calculating coordinate values of the strong light penetrating through the shading units on the anti-dazzle film when the strong light enters the human eye according to the human eye position, and adjusting the light transmittance and the polarization rate of the shading units at the corresponding positions according to the coordinate values. According to the system, the light transmittance and the polarization rate of the area needing anti-glare can be changed in a targeted mode, and the light transmittance and the polarization rate of other areas not needing anti-glare are not affected.

The invention discloses a method for improving image quality. The method comprises the following steps: S1, performing non-local mean filtering on a to-be-processed image to obtain an image A; s2, performing Laplace operator transformation on the image A to obtain an image B; s3, highlighting the graphic edge of the image A by using a Sobel algorithm to obtain an image C; s4, masking the image B by the image C to form a masked image, and multiplying the masked image by an influence factor K to complete image enhancement; and S5, converting the enhanced image into a pseudo-color image E througha mapping function. According to the method, some bad texture burrs can be eliminated on the basis of well performing pseudo-color enhancement, and the image is smooth and tidy; and while the arrangement aesthetic feeling is improved, the thin and narrow detail structure of the graph surface is maintained.

The invention, which belongs to the technical field of the single-chip microcomputer, especially relates to a paint detection system comprising a main control module, a display module, and a power supply module. The main control module consists of a chip U1, an amplifier U2, an amplifier U3, a resistor R10, a resistor R11, a resistor R12, a resistor R13, a resistor R14, and a capacitor C7; a pin 2 of the chip U1 is connected with a voltage of +12 V; and a pin 2 of the amplifier U2 is connected with one end of the capacitor C7. The display module includes a resistance bar RP1, a display screen L1, a sliding rheostat R1, a resistor R2, a capacitor C1, and a capacitor C2. The power supply module includes a power supply J1, a power supply J2, a bridge D1, a resistor R4, a resistor R5, a resistor R6, a resistor R7, a capacitor C3, a capacitor C4, a capacitor C5, a capacitor C6, a triode Q1, a diode D2, a voltage-regulator tube D3, and a switch S1; and a pin 1 of the power supply J1 is connected with one end of the switch S1.

The embodiment of the invention discloses a digitization method for historical aerial photos, and relates to the technical fields of airport navigation station site selection and construction, urban planning, sunlight analysis, terrain analysis, public safety and photography. The digitization method is used for solving the problems that in the prior art, digitization of the historical aerial photos needs to be completed in a scanning mode, and the working efficiency is low. The digitization method of the historical aerial photos comprises the following steps: shooting a target historical aerial photo through a digital camera, wherein the pixel of the digital camera is not less than a billion level; performing image post-processing on the original image output by the camera to obtain an output image of which the resolution is not lower than 23mu, and digitally storing the output image. The high-resolution large-area-array digital camera is used for shooting the images of the historicalaerial photos, computer post-processing is combined, aerial photography data can be rapidly digitized, the historical aerial photos do not need to be scanned any more, and the digitization efficiencyof the historical aerial photos is improved.

The invention discloses a pipeline defect detection method and device in a complex light environment, and belongs to the field of computers. The method comprises the following steps: acquiring an original image in a pipeline; performing gamma correction on the original image to generate a pipeline defect image corresponding to the illumination level; and identifying position information and defect types of defect areas in the pipeline defect image by adopting a defect detection algorithm. Through the pipeline defect detection method and device, the technical problem that the category of defect data is unbalanced during pipeline defect detection in the prior art is solved, and pipeline images collected under different illumination levels can be adaptively processed.