283results about How to "Solve the problem of color cast" patented technology

The invention relates to the digital image processing field and particularly relates to a white balance and dark primary color adaptive histogram underwater image enhancement method. The method comprises steps that step 1, color correction for an image is carried out through utilizing a dynamic threshold white balance algorithm; step 2, a dark channel map of the image after color correction is solved through utilizing a dark channel model; step 3, a weight factor of block images is calculated; step 4, underwater image processing is carried out through utilizing a CLAHE method; step 5,the weight factor and gray mapping relationship tables are utilized to acquire a final gray mapping relationship table of a block through fusion calculation; and step 6, a bilinear interpolation algorithm is utilized to calculate a gray mapping value corresponding to each pixel in block images one by one, enhanced block images are acquired, interpolation calculation for pixels connected between the adjacent block images is carried out, and images of underwater images after enhancement are acquired. The method has advantages of simple calculation and strong timeliness.

The invention discloses an underwater color image enhancement method integrating dark primary and white balance and belongs to the technical field of image processing. In an underwater environment, scatter and attenuation of light result in low contrast of an underwater color image, color distortion, and serious image quality reduction; an underwater optical imaging model is established; underwater transmissivity and atmosphere light components are estimated according to a dark primary prior rule, the underwater color image is restored and sharpened; and the restored image is subjected to color correction according to a white balance theory, and the underwater color image is enhanced. The underwater color image enhancement method can better enhance image details according to imaging characteristics of the underwater color image; colors are rich, and the method has higher operational speed.

The invention belongs to the technical field of electronic surveillance, and relates to a surveillance camera filtering system and method. According to the system and the method disclosed by the invention, a light filter is switched into an infrared light filter in the daytime, and infrared light can be filtered so as to solve the color cast problem caused by the infrared light in the day time; at night, since visible light brings severe interference to a driver at night, a visible light white-light lamp is forbidden to use for snapshotting, the light filter is switched into an all-pass light filter to allow as much light as possible to enter the surveillance camera; meanwhile, the white-light lamp which emits infrared light and ultraviolet light is used, clearer images can be snapshotted since the infrared light and the ultraviolet light have an obvious light filling effect under a condition of dark light at night, and a license number or specific surveillance characteristics can be better extracted.

The invention provides a curved-surface liquid crystal display panel. The curved-surface liquid crystal display panel comprises colorful film substrates, array substrates and a liquid crystal layer. Each colorful film substrate is provided with colorful film color resistors and a black matrix, and each array substrate is arranged to be opposite to the corresponding color film substrate and provided with a pixel electrode and a data line, wherein the pixel electrode has a first edge and a second edge, the edge length of the first edge is larger than the edge length of the second edge, and the curving direction of the curved-surface liquid crystal display panel is the same as the extending direction of the first edge. The liquid crystal layer is arranged between the color film substrates and the array substrates. The invention further provides a curved-surface liquid crystal display device. According to the curved-surface liquid crystal display panel and the curved-surface liquid crystal display device, as the bending direction of the curved-surface liquid crystal display panel and the extending direction of the long edges of the pixel electrodes keep coincident, the color cast is reduced.

The invention discloses an image defogging method based on two times of guide filtration. Firstly, an original foggy image is preprocessed to obtain an atmospheric light curtain rough estimation graph, and a guide image is obtained through a guide filter; secondly, a refined atmospheric light curtain graph is obtained through the guide filter; thirdly, the atmospheric light intensity value is calculated, and an atmospheric scattering physical model is adopted to conduct image restoration processing on the original foggy image; finally, the restored image is enhanced. The image defogging method based on two times of guide filtration has universality and popularity, effectively improves the definition of the image which is defogged and also effectively improves the real-time performance of an algorithm.

The invention provides a pixel structure and a liquid crystal display panel. The pixel structure comprises a first public electrode and a second public electrode set, wherein a plurality of scanning lines and data lines are crossed and formed into a plurality of pixel units; each pixel unit is corresponding to each scanning line and each data line and comprises a main area electrode, a secondary area electrode and a thin film transistor; a grid electrode of the thin film transistor is connected with the scanning line corresponding to the pixel unit, a source electrode is connected with the data line corresponding to the pixel unit and a drain electrode is respectively connected with a main area electrode and a secondary area electrode; the main area electrode is corresponding to the first public electrode; the secondary area electrode is corresponding to the second public electrode set; different voltages are applied to the first public electrode and the second public electrode set, so that the liquid crystals in the pixel areas corresponding to the main area electrode and the secondary area electrode are deflected for different degrees. According to the pixel structure and the liquid crystal display panel provided by the invention, the structure is simple, the opening rate is increased and the color cast phenomenon is avoided.

The embodiment of the invention discloses a curved display panel and a manufacturing method thereof. The curved display panel includes at least two curved parts, wherein in the connected carved parts,the curvature radii of the curved parts are different. The curved display panel also includes a compensation micro lens layer positioned on a light emitting side of the curved display panel, whereinthe larger the curvature radius of each curved part is, the lower the light scattering degree of the portion, corresponding to the curved part, of the compensation micro lens layer is; the compensation micro lens layer includes multiple compensation micro lenses. Compared with existing curved display panels, the provided curved display panel includes the compensation micro lens layer; scattering is carried out on light through the compensation micro lens layer, the emitted light in different colors can be better scattered, the amount of light with color shift in an original color shift area isreduced, and therefore the color shift phenomenon of the curved display panel can be reduced so that the viewing angle deterioration phenomenon of the curved display panel can be alleviated.

The invention relates to a method for compensating local lens shadow. An image region is divided into a plurality of local regions from inside out by taking an optical center as a centre point. When a target pixel is located in a first local region, a first compensation gain value is determined according to the position of the target pixel relative to the optical center; when the target pixel is located in a second local region, a second compensation gain value is determined according to the position of the target pixel relative to the optical center; when the target pixel is located in a third local region, a third compensation gain value is determined according to the position of the target pixel relative to the optical center; when the target pixel is located in a fourth local regions, a fourth compensation gain value is determined according to the position of the target pixel relative to the optical center; and a mixed compensation value is determined according to the first compensation value to the fourth compensation value so as to carry out compensation on the target pixel.

The invention provides a display panel and a display device. The display panel comprises a light-transmitting display area and a main display area. The main display area surrounds the light-transmitting display area. The display panel is composed of a number of rendered pixel units. Each rendered pixel unit comprises a number of first rendered pixel units in the main display area and a number of second rendered pixel units arranged in the light-transmitting display area. According to the invention, the density of the second rendered pixel units in the light-transmitting display area is reducedto acquire better light transmittance, so that the display device can acquire a better shooting effect; the second rendered pixel units in the light-transmitting display area are arranged by using traditional RGB sub-pixels; and the problem of color cast caused by pixel lowering in the light-transmitting display area is solved.

The invention provides a pixel structure of a liquid crystal display panel. The pixel structure of a liquid crystal display panel comprises a first substrate, a first electrode, a dielectric layer, a second electrode, a second substrate, and a liquid crystal layer, wherein the first electrode is arranged on the first substrate, the dielectric layer is arranged on the first substrate and covers the first electrode, and the second electrode is arranged on the dielectric layer. The second electrode comprises at least a main trunk electrode, multiple branch electrodes which are connected with the main trunk electrode, and multiple narrow slits which are respectively formed between neighboring branch electrodes. The second substrate is arranged opposite to the first substrate, the liquid crystal layer is arranged between the second electrode and the second substrate, and the liquid crystal layer comprises multiple negative type vertically aligned liquid crystal molecules.

The invention discloses a display panel and a display device. The display panel includes a plurality of pixels arranged in rows and columns, a plurality of data lines extending in the column directionand a plurality of scan lines extending at least in the row direction. The multiple pixels include first pixels, second pixels and third pixels, wherein the first pixels and the second pixels are located in the same columns and are connected with the same data lines. The first pixels include first transparent color films, the second pixels include second non-transparent color films, and the thirdpixels include third non-transparent color films. The area of each first pixel is smaller than the area of each second pixel, and the area of each third pixel is larger than the area of each second pixel. The pixel area corresponding to the transparent color films is reduced, and the pixel area corresponding to the non-transparent color films is increased, so that the color shift problem caused by the excessive amount of light emitted by the pixels corresponding to the transparent color films is avoided; and meanwhile, the pixel area corresponding to the non-transparent color films is increased so that the overall transmittance of backlight can be increased, the brightness of a backlight module is reduced, and the power consumption of the backlight module can be reduced.

The invention discloses a method for adjusting white balance. The method is used for adjusting color cast of a liquid crystal display and includes the steps of according to different wiring distances away from source driver ICs, dividing a display panel of the liquid crystal display into a plurality of regions, and adjusting the white balance of the regions according to different white balance reference tables. The invention further provides a method for manufacturing the liquid crystal display and the liquid crystal display obtained according to the method, and the liquid crystal display panel is adjusted with the method for adjusting the white balance. According to the method for adjusting the white balance, the method for manufacturing the liquid crystal display and the liquid crystal display, the mode of region-dividing adjustment is adopted, and the color cast problem, caused by different wiring distances of parts of the panel when a COF wiring mode is adopted, in the display panel of the liquid crystal display is solved.

The embodiment of the invention provides an array substrate, a manufacturing method thereof and a display device, and relates to the technical field of display. The color cast phenomenon of the display device can be reduced, and the display effect can be improved. The array substrate comprises a plurality of pixel units which are arranged in an array mode, each pixel unit comprises a plurality of sub-pixel units, the widths of the sub-pixel units are equal, each sub-pixel unit corresponds to one first electrode, each first electrode comprises a plurality of strip-shaped structures which are arranged at an equal interval, and intervals of the strip-shaped structures of the first electrodes corresponding to different sub-pixel units in each pixel unit are not completely equal; any sub-pixel unit meets the inequation of Q*W+ (Q-1)*D<A, wherein A is the width of the sub-pixel units, Q is the number of the strip-shaped structures of the first electrodes corresponding to the sub-pixel units, D is the interval of the strip-shaped structures of the first electrodes corresponding to the sub-pixel units, and W is the with of the strip-shaped structures of the first electrodes corresponding to the sub-pixel units. The array substrate, the manufacturing method of the array substrate and the display device are applied to the technical field of display.

The invention provides an underwater image enhancement method based on color correction and detail enhancement. The underwater image enhancement method provided by the invention comprises the following two steps: color correction and detail enhancement. The method comprises: firstly, selecting a partially clear underwater image, adjusting the Lab value of the underwater image to be restored by referring to the average value of the clear image Lab, and color correction is achieved; For a color correction image, converting an RGB space into an HSV space, performing histogram equalization on H, performing normalization processing on S and V, and achieving contrast enhancement; and secondly, processing the linear combination of the contrast-enhanced image by adopting a Laplace operator to obtain an edge mapping graph, and carrying out linear weighted fusion on the edge mapping graph, the contrast-enhanced image and the edge mapping graph to obtain a final enhanced underwater image. According to the algorithm, color correction is realized by adjusting the Lab space value, and detail enhancement is realized by using the Laplace operator, so that the image has rich detail information on the basis of color correction, and the overall visual effect of the image is improved.

The embodiments of the invention provide a liquid crystal display device, and relates to the technical field of liquid crystal displays. According to the embodiments of the invention, a liquid crystal display device is dynamically controlled within a backlight sub-area controlled dynamically by the sub-area backlight. A plurality of excitation-point light sources serve as excitation light sources of a surface light source and the quantum dot material in a quantum dot packaging part along the light emergent direction of the above light sources is excited. Between the plurality of excitation-point light sources and the quantum dot packaging part, a light selection part is arranged to select the transmission of the excitation light sources sent from the light sources and reflect the excitation light generated through exciting the quantum dot material. In this way, the back light reflected back by the quantum dot packaging part can be reflected by the light selection part, so that the interference of the back light on a white light source in the adjacent area can be avoided. Therefore, the white light of the white light source in the backlight sub-area is formed through only mixing up the excitation light generated by the point light sources in the backlight sub-area with the motivated light of the above point light sources generated through exciting the excitation light of the point light sources.

The invention discloses a gamma voltage adjusting circuit and a display device; the gamma voltage adjusting circuit comprises the following parts: a gamma voltage input end and a gamma voltage outputend; a switch control circuit configured to form a first control signal or a second control signal according to a received sequential control signal; a gamma voltage output circuit configured to conduct when receiving a first switch signal, and to output a first gamma voltage inputted by the gamma voltage input end to the gamma voltage output end; a gamma voltage processing circuit configured to convert the first gamma voltage inputted by the gamma voltage input end into a second gamma voltage when receiving a second control signal, and to output the second gamma voltage to the gamma voltage output end. The gamma voltage adjusting circuit can improve the image quality of a display panel.

The invention provides a reflective polarizer sheet which comprises a cholesterol liquid crystal layer, a phase difference membrane with a 1/4 wave length and a bonding layer. The bonding layer is positioned between the cholesterol liquid crystal layer and the phase difference membrane with the 1/4 wave length; and a jointing agent and blue pigment are included in the bonding layer. The blue pigment is added in the bonding layer of the reflective polarizer sheet so as to compensate the color problem caused by the reflective polarizer sheet self and a large horizontal viewing angle. A micro bead can be added in the bonding layer of the reflective polarizer sheet or a condenser micro-structure is configured on the outer side of the phase difference membrane with the 1/4 wave length so as to further improve the color problem caused by the reflective polarizer sheet self and the large horizontal viewing angle.

The embodiment of the invention discloses a polarization module and a display panel. The polarization module comprises a first polarizing plate arranged on the light entrance side and a second polarizing plate arranged on the light exit side, and a polarizing film layer arranged between the first polarizing plate and the second polarizing plate, wherein the polarizing film layer comprises a lighttransmitting region and a polarizing region; A first polarizer and a second polarizer are used for emitting incident polarized light as linearly polarized light in a specified polarization direction;A polarizing region is used for retarding a phase of linearly polarized light incident into the polarizing region in a direction different from an optical axis direction of the polarizing region suchthat the exiting polarized light includes a first polarized light in a first polarizing direction and a second polarized light in a second polarizing direction; A light-transmitting region is used fortransmitting light incident into the light-transmitting region. The embodiment of the invention solves the problem of color deviation of the existing display panel under different viewing angles without affecting the front efficiency of the OLED panel, the cathode resistance and the color gamut of the display picture.