39 results about "Color factor" patented technology

A display apparatus includes a display section having plural display elements for displaying a display object with N (natural number larger than one) display elements per pixel, and a display control section, communicably connected to the display section, for controlling the displaying state of the display section in terms of color factors of the respective display elements in such a manner that the display object is displayed with each of the display elements corresponding to one or more pixels on the display object. It is possible to display a small letter, serving high visibility.

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.

The invention discloses a method and device for identifying a signal light. The method for identifying the signal light includes the following steps: a, extracting candidate luminance pixels and candidate color pixels from a traffic information image, wherein the color of the candidate color pixels is red or yellow or green; b, confirming judgment areas with the candidate luminance pixels as centers, counting the number of the candidate color pixels in the judgment areas and confirming the corresponding color of the candidate color pixels in the judgment areas, c, confirming the color of the signal lights which are represented by the candidate luminance pixels according to the number and the color of the candidate color pixels, d, aiming at the types of the different signal lights, confirming candidate areas according to the positions of the candidate luminance pixels and the color of the signal lights which are represented by the candidate luminance pixels, and judging whether the candidate areas are the signal lights through a shape detection method. By means of the method for identifying the signal light, the signal light candidate areas are confirmed with the combination of luminance factors and color factors, the number of finally confirmed candidate areas is reduced, the confirming accuracy of the candidate areas is improved, and thus the processing speed and accuracy of the follow-up shape detection process are improved.

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 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 a light source spectral optimization method based on a CAM02-UCS color appearance model, and the method comprises the following steps of firstly establishing an imaging model, calculating an original pixel value of the image, and detecting the coordinates of pixel points in a target area by using a significance detection method; mapping the detected pixel point set of the target area into a CAM02-UCS color appearance model, establishing a target function of a maximized chromatic aberration, and optimizing the target function with the genetic algorithm to obtain a pixel value of the maximized chromatic aberration; and obtaining the optimal light source spectral power according to the pixel value. The light source spectral optimization method based on the CAM02-UCS color appearance model provided by the invention has the beneficial effects that the technical solution proposed by the invention can intuitively see the effect of light source optimization by optimizinglight source spectrum to change two important visual color factors of chroma and hue, combined with the LED light source spectral model and optimization algorithm, and the intuitive description method of the color gamut model.

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.

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.