192results about How to "Avoid brightness" patented technology

The present invention discloses an automatic exposure method basing on the target area in the image. The method comprises the following procedures: (a) executing target detecting to the image of the currently detected frame to judge whether a target exists; (b) confirming the brightness value of the currently detected frame used for calculating the exposure parameter according to the brightness value of the target area in the currently detected frame and the brightness value of the target area in the previous detected frame when a target exists; and (c) calculating the exposure parameter according to the brightness value of the currently detected frame and executing automatic exposure adjusting to the subsequent image until the brightness of the last detected frame is confirmed and the exposure parameter is calculated. The method adopting the invention can facilitate that the target area in the image has appropriate brightness information relative to the total graph background. The signal-to-noise ratio of the target area is increase. The insufficient brightness or over exposure in the target area can be prevented. The effect is especially evident in the target backlight or bright light condition.

In a displaying method for use in an image display, an original gray scale is divided into a higher gray scale and a lower gray scale. Further, the color subpixels are divided into two groups corresponding to the higher and lower gray scales, respectively. The gray scale to be expressed by each subpixel is calibrated by weighing the original higher or lower gray scale for the pixel and the adjacent pixels and summing up the results. The color shift problem due to different visual angles can therefore be solved.

Oxidative compositions and processes that preserve and enhance the brightness and improve color of pulp or paper when applied during different stages of the papermaking process are identified. The oxidative composition and method maintains and/or enhances brightness, prevents yellowing, and enhances the performance of paper products. Used in combination with optical brighteners and/or chelants the oxidative agents produce a synergistic effect not previously identified in the paper process.

Compositions and processes that preserve and enhance the brightness and improve color of pulp or paper when applied during different stages of the papermaking process are identified. The composition and method maintains and/or enhances brightness, prevent yellowing, and enhances the performance of paper products. Used in combination with optical brighteners and/or chelants the described agents produce a synergistic effect not previously identified in the paper process.

A liquid crystal display includes first and second gate lines arranged in parallel to each other and sequentially transmitting a gate voltage, a data line crossing the first and second gate lines and transmitting a data voltage, a pixel electrode constituted by first and second sub-pixel electrodes and electrically disconnected from each other, a first switching element connected to the first gate line, the data line, and the first sub-pixel electrode, a second switching element connected to the first gate line, the data line, and the second sub-pixel electrode, a third switching element connected to the first sub-pixel electrode across a charge-sharing capacitor, and a fourth switching element connected to the second gate line and the second sub-pixel electrode and connected to the first sub-pixel electrode across the charge-sharing capacitor.

The invention provides a lighting device and an inputting device, thereby adjusting the quantity of light emitted from a light source, guided into a light guide layer and provided to a plurality of lighting indication parts according to each lighting indication part. The light source (8) is opposite to the light guide layer (3) to form the lighting device (30). A plurality of diffuse reflection parts (35A,35B) are formed on the surface of the light guide layer (3) and concave reflected rays (37A,37B) are formed on the diffuse reflection parts (35A,35B). The reflected rays (37A,37B) are different in the diffuse reflection parts (35A,35B) relative to the cross angles of optical paths (LA,LB) extending from the light source (8). The result shows that: the quantity of the light reflected by the diffuse reflection parts (35A,35B) and provided to the lighting indication part thereon and the quantity of the light through the diffuse reflection parts (35A,35B) are adjusted.

A color gamut mapping method, which is capable of minimizing a color difference perceived by a person, preventing brightness and contrast from deteriorating, and improving color reproducibility, and a liquid crystal display device using the same are disclosed. The color gamut mapping method includes converting image data having an original gamut into lightness, chroma and hue data, adjusting a primary hue angle of the original gamut according to a reproduction gamut and adjusting the hue data according to the adjustment amount of the primary hue angle, changing the lightness of an original gamut boundary in consideration of a reproduction gamut boundary and changing the brightness data by the change amount of the lightness of the original gamut boundary, deciding a focal point, which is a reference point of color gamut mapping, according to the size, the shape and the position of the original/reproduction gamut in lightness and chroma coordinates, deciding a mapping slope according to the decided focal point FP and a mapping area in which the lightness and chroma data are located and mapping the original gamut to the reproduction gamut according to the decided mapping slope, and converting the lightness, chroma and hue data mapped to the reproduction gamut into image data.

An LED illumination device includes an optical section at a front end thereof, an electrical section at a rear end thereof, and a heat dissipation section between the optical section and the electrical section. The optical section includes a plurality of LEDs electrically connecting with the electrical section, and a light output housing around the LEDs. The heat dissipation section includes a plurality of L-shaped heat pipes, a heat sink and a mounting seat. Each of the heat pipes includes an evaporation section and a condensation section substantially perpendicular thereto. The condensation sections of the heat pipes are received in the heat sink. The mounting seat attaches to the evaporation sections of the heat pipes. The LEDs thermally connect with evaporation sections via the mounting seat.

A light emitting device capable of preventing a luminance of individual light emitting elements from being fluctuated by applying electrical characteristics of TFTs for properly controlling current being fed to individual light emitting elements, and also capable of generating the constant luminance without adversely being affected by possible degradation of organic light emitting layers and variable temperature by way of preventing the luminance of light emitting elements from being lowered through degradation of organic light emitting layers. Instead of controlling the luminance of light emitting elements by means of a voltage applied to TFTs, by way of properly controlling current flowing into TFTs via a signal-line driving circuit, it is possible to hold on the current flowing into light emitting elements at a desired value without adversely being affected by electrical characteristics of TFTs. Further, a voltage biasing in an inverse direction is fed to light emitting elements per predetermined period of time. The above-described double means multiply such practical effects to more securely prevent the luminance from being lowered by possible degradation of organic light emitting layers, and make it possible to hold on such current flowing into light emitting elements at a desired value without being affected by electrical characteristics of TFTs.

A liquid crystal display includes a scanning backlight controller, that calculates a turn-on duty ratio of a pulse width modulation (PWM) signal for controlling turn-on and turn-off operations of light sources, and a light source driver, that synchronizes a frequency of the PWM signal with a frame frequency or synchronizes the frequency of the PWM signal with the frame frequency, changes the calculated turn-on duty ratio of the PWM signal to a maximum value, and adjusts an amplitude of the PWM signal based on a changed degree of the turn-on duty ratio of the PWM signal, based on the result of a comparison between the turn-on duty ratio of the PWM signal and a previously determined critical value, and then sequentially drive the light sources along a data scanning direction of the liquid crystal display panel.

An electro-optical device includes: a liquid crystal panel that includes display pixels each having a plurality of sub-pixels; and an illuminating device that illuminates the liquid crystal panel. In the electro-optical device, the plurality of sub-pixels include at least two cyan and white sub-pixels.

The invention relates to a manufacturing method of an array substrate for a liquid crystal display, and the method comprises steps of: a) forming a grid on the substrate; b) forming a gate insulation layer on the substrate comprising the grid; c) forming a semiconductor layer on the gate insulation layer; d) forming a source electrode/drain electrode on the semiconductor layer; and e) forming a pixel electrode connected with the drain electrode; the step a) comprises steps of: forming a copper based metal film on the substrate, a multi-layer of a copper based metal layer and a metal oxide film, or a multi-layer of a copper based metal layer and a molybdo-based metal layer; and etching the film to form the grid through etching agent composition; the step d) comprises steps of: forming a copper based metal layer on the semiconductor, a multi-layer of a copper based metal layer and a metal oxide film, or a multi-layer of a copper based metal layer and a molybdo-based metal layer; and etching the film to from the source electrode/drain electrode through the etching agent composition.

The invention relates to the technical field of image processing and provides an image enhancement algorithm based on a gauss hybrid model. According to the method, at first, luminance components of a color image are counted into a histogram, and mixture gauss modeling is carried out on the histogram; secondly, an improved EM algorithm is used for carrying out gauss hybrid model estimation on the histogram, a parameter of expectation maximization of a likelihood function is found out, and the optimum cluster quantity is determined through self-adaptation; thirdly, partition is carried out on the histogram according to an intersection point of adjacent clusters, and a plurality of sub-histograms are obtained; finally, the mapped clusters are found out according to the fact that area proportions of the sub-histograms with mapping relations are equal, the mapping function is adjusted in a micro mode according to application of the characteristic that the maximum entropy method tends to the human vision, and the final enhanced image is obtained. By the adoption of the image enhancement technology, the algorithm effectively improves the contrast ratio of the image, and increases the processing speed. The enhanced image obtained through the method achieves good effects in subjective visual perception aspect and objective evaluation aspect.

A lighting device includes a board mounting a light source, a first hole provided in the board, a projecting part protruded inside the first hole from a periphery of the first hole, a light guide which receives a light emitted from the light source through a light receiving plane, and transmits the light from a light transmitting plane, and the first protrusion which is integrally formed in the light guide and is inserted into the first hole, wherein the projecting part presses a side of the first protrusion so that the board can move toward the light receiving plane.

The invention discloses an image defogging method based on weak supervision generation antagonism network. The present invention mainly solves the problem of instability of defogging effect of the real foggy day image in the prior art. The implementation scheme is as follows: 1) obtaining a real training set and a composite training set; 2) respectively constructing a generation network and a confrontation network; 3) updating the parameters of the countermeasure network according to the loss function of the countermeasure network; 4) establishing a loss function of the generating network andupdating parameters of the generating network according to the loss function; 5) judging whether the update times of the generation network and the antagonism network reach 100, if so, inputting the real foggy day image into the generation network for defogging, otherwise, returning to step 3). The image after the method of the invention has rich details, improves the brightness, contrast and clarity of the image, reduces the phenomenon of supersaturation and distortion, and can be used in the field of computer vision.

A lighting apparatus according to the present invention is configured from a plurality of blocks controllable individually for brightness or color, wherein each of the blocks comprises a plurality of light emitting devices including a plurality of white light emitting devices and a plurality of colored light emitting devices, and the plurality of light emitting devices of each of the blocks are arranged in a matrix so that the white light emitting devices are positioned at four corners.

A color correction filter with excellent durability is provided that can remove intermediate colors of light while preventing brightness of an image display from deteriorating and thereby can improve color tone representation of the image display. A color correction filter 10 of the present invention includes a color correction layer 11 and two protective layers 12. The color correction layer 11 contains a J aggregate of a dye. The dye is at least one dye selected from the group consisting of cyanine, merocyanine, squarylium, and porphyrin. The half bandwidth at a maximum absorption peak of the color correction layer is in the range of 5 to 30 nm. The two protective layers 12 are formed on both surfaces of the color correction layer 11, respectively.

An organic electroluminescent display and a method of manufacturing the same are provided. The organic electroluminescent display includes a substrate, at least a thin-film transistor, which is formed on the substrate, at least an insulation layer, which cover the thin-film transistor, first electrodes, which are formed in a predetermined pattern on a top surface of the insulation layer and to which a voltage is selectively applied through the thin-film transistor, bus electrodes, which are insulated from the first electrodes, a planarization layer, which is an insulation layer and has openings exposing the first electrodes and the bus electrodes, organic layers, which are formed on a top surface of the first electrodes, and second electrodes, which are formed on a top surface of the organic layer and a top surface of the planarization layer and are electrically connected to the bus electrodes.