2720 results about "Grey level" patented technology

This invention discloses one display method, which divides the relative original grey values into higher and lower grey values and divides the secondary pixel area into two sets in same color suitable for high and low second grey values; each set displayed grey values are computed from itself pixel and near higher grey value or lower grey value through different weigh proportion to solve the problem if different vision angles.

The present invention provides driving methods for a display having a binary color system of a first color and a second color, which methods can effectively neutralize the grey level shifts due to degradation of a display medium.

A probe control interface is provided for a structured light non-contact coordinate measuring machine probe. Portions of a video control signal for controlling the grey level of selected rows of pixels of a spatial light modulator of the probe can be decoded into control signals for additional probe components or functions that have been added to increase the measuring capabilities or versatility of the non-contact probe. By providing the additional probe component control signals in this manner, a versatile structured light non-contact probe system can be made compatible with a standard probe head autojoint system (e.g. a Renishaw™ type system), thus allowing the probe to be automatically exchanged with other standard probes and allowing existing systems to use the non-contact probe more easily. Various aspects of the probe control interface allow for relatively simple, compact, lightweight and robust implementation.

The present invention is directed to a driving method for compensating the response speed change of an electrophoretic display due to temperature variation, photo-degradation or aging of the display device, without a complex structure (e.g., use of sensors). This is accomplished by combining two waveforms, one of which causes the grey level to become dimmer and the other waveform causes the grey level to become brighter, as the response speed degrades.

A global optimization framework for optical character recognition (OCR) of low-resolution photographed documents that combines a binarization-type process, segmentation, and recognition into a single process. The framework includes a machine learning approach trained on a large amount of data. A convolutional neural network can be employed to compute a classification function at multiple positions and take grey-level input which eliminates binarization. The framework utilizes preprocessing, layout analysis, character recognition, and word recognition to output high recognition rates. The framework also employs dynamic programming and language models to arrive at the desired output.

A two-dimensional image is displayed and a grey level image is drawn on said two-dimensional image defining a depth map. A stereo image pair is generated based on the depth map and an anaglyph image of the stereo image pair is displayed. Edits of the depth map are displayed by anaglyph image. A plurality of projection frames are generated based on the depth map, and interlaced and printed for viewing through a micro optical media. Optionally, a layered image is extracted from the two-dimensional image and the plurality of projection frames have an alignment correction shift to center the apparent position of the image. A measured depth map is optionally input, and a stereo pair is optionally input, with a depth map calculated based on the pair. The user selectively modifies the calculated and measured depth map, and the extracted layers, using painted grey levels. A ray trace optionally modifies the interlacing for optimization to a particular media.

A method and apparatus for detecting a joint between workpieces is provided. At least one light line is recorded by the light section method to detect the three-dimensional course of the joint and a grey-level image of the joint is also recorded. The grey-level image is evaluated to assess the quality of the joint.

The embodiment of the invention discloses a mura phenomenon compensation method of a display panel. The method comprises the steps of compressing an area interval with n*m pixels, and storing a preset mura compensation value corresponding to one of first pixels in each area; according to a compensation value of the preset mura, conducting linear interpolation calculation to obtain mura compensation values of other pixels except the first pixel in the same area, and conducting mura compensation on the display panel; after the display panel conducts the mura compensation, obtaining information that a mura phenomenon still exists in the Xth area, wherein the Xth area belongs to the area formed by compressing the area interval with n*m pixels of the display panel; obtaining a final gray-scale compensation curve formula; according to the preset mura compensation value and the final gray-scale compensation curve formula, calculating supplementary mura compensation values corresponding to other pixels except the first pixel in the Xth area; conducting mura compensation on the Xth area again. The embodiment of the invention further discloses the display panel. By adopting the mura phenomenon compensation method of display panel and the display panel, the mura phenomenon compensation method of the display panel has the advantages that nonuniform brightness of a picture of the display panel can be alleviated.

The invention discloses a liquid-crystal panel and a drive method therefor. The method comprises the steps: providing the liquid-crystal panel, wherein the liquid-crystal panel comprises an M*N pixel unit matrix and each pixel unit sequentially consists of a red sub-pixel unit, a green sub-pixel unit, and a blue sub-pixel unit, thereby enabling the liquid-crystal panel to comprise an M*(3*N) sub-pixel unit matrix; performing dividing operation for the sub-pixel unit matrix; providing a higher-gray-scale-value BH for the first sub-pixel unit in the sub-pixel unit of each color; providing a lower-gray-scale-value BL for the second blue sub-pixel unit in the sub-pixel unit of each color; and enabling the brightness curve of the sub-pixel unit of each color at an inclined angle to approach a preset Gamma curve. According to the invention, the color bias, generated when a user watch the liquid crystal display from a side or at an inclined angle, can be reduced.