39 results about "Color factor" patented technology

The invention relates to a method for detecting the color cast of a video image based on Lab chrominance space. The method comprises the following steps: a) converting RGB (Red Green Blue) color space into the Lab chrominance space; b) calculating color cast factors. The invention provides a new color cast detecting factor, which is successively used for detecting the color cast of the image. First, the image is converted from the original RGB color space into the Lab chrominance space; then according to the distinction of the spatial gray level histogram distribution of a chrominance and b chrominance between a normal image without color cast and an abnormal image with color cast, the mean value of the spatial gray level histogram distribution of the a chrominance and the b chrominance are respectively calculated; then according to the statistical distribution between the mean value and the mid value of histograms, the color factors are calculated. A lot of experiments of real street view image databases prove that the new color cast detecting factor disclosed by the invention can really reflect the degree of color cast of images so as to complete color cast detection. The method has the advantages of high detection speed and accurate precision.

An image display method including following steps is provided. A backlight of a display panel is adaptively adjusted according to a backlight adjustment factor related to the intensity value of an external light and the brightness of an original image. Brightness factors of the original image are corrected according to the adjustment of the backlight, and the original image is reset by using the corrected brightness factors and original color factors. Thereby, the problem of image distortion caused by backlight adjustment can be reduced.

A method for adjusting a degree of saturation of a target pixel is provided. In a first color space, the target pixel is represented by a brightness factor and a set of color factors. Based on the set of color factors, the method first generates an original saturation and a hue factor. Then, selectively according to the brightness factor, the hue factor, and the original saturation, an adjusting gain is generated. The method, according to this invention, multiplies the original saturation by the adjusting gain to generate a new saturation for the target pixel.

The invention relates to the technical field of a cross color-resistant product, and in particular relates to a cross color-resistant color capturing piece which comprises a carrier piece and a color capturing factor attached onto the carrier piece, wherein the mass fractions of the carrier piece and the color capturing factor are 97-99% and 1-3%; and the carrier piece is dust-free paper or non-woven fabrics, and the color capturing factor is poly-dimethyl diallyl ammonium chloride. After the cross color-resistant color capturing piece is adopted, the color capturing factor having ultrahigh color absorbing capability and color factor locking capability can be attached and added onto the carrier piece, and the color factor faded by washing the fabrics can be fixed, so that fabrics with the other different colors can not be polluted again, and the quality and the level of the product can be guaranteed. Meanwhile, the invention further discloses a preparation method of the cross color-resistant color capturing piece, and the preparation method is simple in technology and high in operability.

The invention discloses an image display method. The image display method comprises the following steps of: flexibly regulating backlight of a display panel by using backlight regulatory factors related to strength of external light and brightness of an original image; correcting brightness factors in the original image by matching regulation of the backlight; and resetting the original image by using the corrected brightness factors and original color factors. Therefore, the problem of image distortion caused by the regulation of the backlight is solved.

A polysulfone composition is provided having a total luminous light transmittance of 84% or greater when measured on 0.1 inch thick specimens using ASTM D-1003. The specimens also meet at least one of the following two conditions: 1) a yellowness index (YI) of less than about 5.0 as measured according to ASTM D-1925 on 0.1 inch thick specimens, or 2) a color factor (CF) of less than about 25, wherein CF is defined by the following equation:

CF=270[(x+y)_sample−(x+y)_air]/t

wherein x and y are chromaticity coordinates measured in transmittance mode and t is sample thickness in inches. Another polysulfone composition is provided comprising a polysulfone, an organic phosphorous-containing melt stabilizer, and at least one of the following additives: a blue to violet dye, and an organic optical brightener. The polysulfone composition of the present invention is used to form transparent molded articles such as ophthalmic lenses.

An exemplary liquid crystal display (200) includes a data circuit (230), a timing control and video output unit (210). The timing control and video output unit includes an image edge enhancement circuit (211) configured for sharpening at least one edge of an image shown by the liquid crystal display, and a converter (212). The image edge enhancement circuit includes a color adjusting unit (214) and a brightness comparison unit (213). The color adjusting unit configured for receiving and adjusting Cb, Cr color factors of the YCbCr image signals according to a result of comparison of brightness factors Y of the YCbCr image signals received from the brightness comparison unit. The adjusted YCbCr image signal is converted to a corresponding RGB signals by the converter circuit and the RGB signals are sent to the data driving circuit.

The invention provides an object image relighting method based on block-matching transformation and color transfer. A block-matching algorithm and a color transformation algorithm are combined with local and global lighting transfer models; on the premise of keeping the lighting condition of a reference image constant, the color of the reference image is changed by the color transformation algorithm, so that the color of the reference image is consistent with the color of an input image; and since colors have relatively great influences on image lighting transfer, the influences of the colors on later lighting transfer processing can be lowered greatly in the above way. After the influences of color factors on results are lowered greatly, the reference image is deformed by the block-matching algorithm, so that the shape of the reference image is matched with an object in the input image. Finally, the input image and the transformed reference image are subjected to lighting transfer through local and global affine transformation, so that relighting of the input image is finished. The method is very easy to implement through software, and can be popularized and applied to a wide variety of fields such as computer vision, visual design, digital entertainment and film producing.

The invention provides a device and a method for generating phosphene for simulating prothetic vision. The device comprises an image supply module, a phosphene processing module and an image display module, wherein the image supply module is connected with the phosphene processing module to transmit external image information; and the phosphene processing module and the image display module are connected to transmit phosphene adjustment image information. The method for generating the phosphene comprises: inputting the image, preprocessing the image, blocking and dividing entropy intervals, selecting phosphene array distribution for each entropy interval, adjusting the point miss rate of phosphene arrays, setting parameters for each phosphene point, and displaying the image. In the invention, the shape, size, contract, frequency and color factors are taken into consideration in the setting of the parameters for the phosphene respectively, the setting of tortuous distribution of a phosphene queue and the miss rate of the phosphene points is adopted, different parameter settings are adopted for the intervals by separating the entropy intervals of the image, the finally obtain simulation result is closer to actual conditions, and the need for multi-parameter experiment is satisfied.

The invention relates to a cigar coated tobacco leaf sorting method in the field of tobacco. The method comprises two sorting operations, first sorting is conducted according to the quality factor oftobacco leaves, and tobacco leaf areas are divided into two or more quality grades; second sorting sorts the tobacco leaves of each quality grade according to color factors, and the tobacco leaf areasof each grade are divided into two or more color types. The first sorting is divided by quality characteristics and use value of the tobacco leaves, improves the labor efficiency, and solves the problems of excessive number of grades of coated tobacco leaves in the production and sale process of the cigar coated tobacco leaves, the difficulty in trading and transferring caused by few commercial products and the like, and the second sorting allows the cigarette industry to better satisfy the preference of different consumers for different cigar colors, reduces the cost of secondary grading andmeets the market demand.

The invention discloses a harmonious color matching scheme generation method based on the graph interaction technology. According to the method, on the basis of the HSL color space, three factor parameters which include the hue, the purity and the lightness of each color for forming the color matching schemes are stipulated to respectively meet two principles, namely, the familial principle and the equidistance gradient comparison principle. According to the principles, all the color matching schemes generated according to the method can conform to the color harmony law, and the harmonious degrees of the color matching schemes are ensured. The method is implemented through interaction color scheme generation tools. A user adjusts parameters on the hue axis, the purity axis and the lightness axis through a graph interface so as to form a color factor combination method conforming to the principles, and the harmonious color matching scheme meeting the requirement of the user is generated in real time through a system. Parameter values of all colors of the color matching schemes are provided through the system at the same time, and the real-time pattern coloring review function is achieved through the system. The harmonious color matching scheme generation method has the advantages of being visible in interaction interface, simple in working procedure, efficient in color relation editing method, stable in color harmonious degree and the like.

The invention discloses a fruit segmentation method based on a sparse convolution kernel. According to the invention, the method comprises the steps: analyzing the distinction degree of a main objectin a fruit image under different color factors; selecting an appropriate color channel to reconstruct an image, and then proposing a sparse convolution kernel construction mode that elements are spaced from one another and are not adjacent to one another, and determining elements in a sparse convolution kernel by adopting a linear classifier; and finally performing convolution operation on the reconstructed image by adopting the sparse convolution kernel, so fruit segmentation is realized.

The embodiment of the invention discloses a method and system for simulating the atmosphere. The method comprises the following steps: the initial color of a collection point in the atmosphere is obtained; a color factor is generated according to an RGB (red green blue) value of the initial color; a first intersection point and a second intersection point are obtained; a color imitating factor is generated according to a point of sight, the collection point, the first intersection point and the second intersection point; the imitated color of the collection point is generated according to the initial color, the color factor and the color imitating factor; and the imitated color is filled in the collection point. According to the embodiment of the invention, the imitated color is generated by calculating the color imitating factor of the atmosphere collection point in a geography atmosphere model, the color of the atmosphere is simulated efficiently in real time, and a better rendering effect is obtained.