1677 results about "Pixel pair" patented technology

An image sensing apparatus including: an image sensor including a plurality of focus detection pixel pairs that perform photoelectric conversion on each pair of light beams that have passed through different regions of a photographing lens and output an image signal pair; a flash memory that stores shift information on relative shift between an optical axis of the photographing lens and a central axis of the focus detection pixel pairs; a correction unit that corrects a signal level of the image signal pair based on the shift information and exit pupil information of the photographing lens so as to compensate for an unbalanced amount of light that enters each of the focus detection pixel pairs; and a focus detection unit that detects a focus of the photographing lens using the image signal pair corrected by the correction unit.

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.

In the driving of a liquid crystal display panel with pixels in a matrix comprising n rows and m columns, when a partial display instruction is issued, respective rows in a display area (202) of s rows and m columns within the matrix are sequentially selected for one frame. Then, predetermined partial display data is written into the selected rows. Predetermined background data such as white display data is written into the background area (204) other than the partial display area (202). In the background area 204, either k rows and m columns or pixels of (the leading row ((s+1)-th row) of the background area, next to the final row in the partial display area) are selected during one frame for writing of the background display data, k rows and m columns are sequentially shifted each frame.

To provide a plural-viewpoint display device having an image separating optical element such as a lenticular lens or a parallax barrier, which is capable of arranging thin film transistors and wirings while achieving substantially trapezoid apertures and high numerical aperture, and to provide a driving method thereof, a terminal device, and a display panel. A neighboring pixel pair arranged with a gate line interposed therebetween is connected to the gate line placed between the pixels, each of the pixels configuring the neighboring pixel pair is connected to the data line different from each other, and each of the neighboring pixel pairs neighboring to each other in an extending direction of the gate lines is connected to the gate line different from each other.

A solid-state imaging device includes: multiple pixels making up a slanted grid array inclined to a scanning direction, which include a photoelectric conversion unit configured to convert incident light quantity into an electric signal; and a charge-to-voltage conversion unit configured to convert signal charge read out from the photoelectric conversion unit disposed between two pixels adjacent to each other in the diagonal direction of the pixels of the multiple pixels into voltage; wherein the charge-to-voltage conversion unit is shared with the two pixels; and wherein a set of transistor group are disposed in a sharing block, which is configured of a pixel pair made up of the two pixels adjacent to each other in the diagonal direction, and a pixel pair adjacent to that pixel pair, including wiring to which the charge-to-voltage conversion unit of each pixel pair is connected.

An image pickup apparatus includes an imaging element having a group of AF pixel pairs that realizes a pupil-dividing function and a group of normal pixels without such a pupil-dividing function. The image pickup apparatus performs focus control for driving a focus lens toward an in-focus position detected by phase different AF based on a pixel signal generated from the group of AF pixel pairs when it is determined that the reliability of the phase difference AF is high based on the pixel signal. The image pickup apparatus performs focus control for driving a focus lens in an in-focus direction detected by contrast AF based on a pixel signal generated from the group of normal pixels when it is determined that the reliability of the phase difference AF is low.

A reflective liquid crystal display panel is a display panel for three-dimensional display in which pixel pairs as display elements composed of one left-eye pixel L and one right-eye pixel R each are provided in a matrix. The lenticular lens is an optical member for image separation that is provided to separate the light from the left and right pixels, and numerous lenticular lenses form a lens array that is arranged in one dimension. An anisotropic scattering sheet as an anisotropic scattering element is provided between the lenticular lens and the reflective liquid crystal display panel. According to this configuration, a reduction in the quality of the reflective display can be minimized, and improved image quality can be achieved without changing the concavo-convex structure of the reflecting panel and the lens shape of the lenticular lens in display device that is capable of displaying different images to a plurality of viewpoints.

A display panel is the one in which a pixel composed of sub-pixels of red (R), green (G), blue (B), and at least one other color has two sub-pixels at least in a vertical scanning direction, and color filters are provided respectively corresponding to the sub-pixels. There are provided: an incoming signal interpolating section which interpolate each of pixels based on incoming color signal components of red (R), green (G), and blue (B) at least in a vertical scanning direction to generate interpolated RGB signals; a luminance signal converting section which converts color signals of interpolated sub-pixels, which are obtained from the incoming signal interpolating section, into luminance signals; an another color luminance component adding section which adds a luminance signal component of at least one other color on a basis of luminance signal components of colors of red (R), green (G), and blue (B), which components are outputted from the luminance signal converting section; and a luminance reallocating section which reallocates luminance signals of peripheral interpolated sub-pixels, for a color of each of the color filters corresponding to the sub-pixels, in accordance with output from the another color luminance component adding section.

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 specification and drawings present a new method, apparatus and software product for image stabilization of an image taken with a fixed (i.e., pre-selected) multi-exposure pattern for at least one color channel by an image sensor of a camera, wherein a plurality of groups of pixels of the image sensor have different pre-selected exposure times for said at least one color channel. The camera can be a part of, e.g., an electronic device such as mobile phone or a portable electronic device.

The invention relates to a brain MRI (magnetic resonance image) segmentation method based on an improved fuzzy C-means clustering algorithm. The method comprises steps that 1, initial classification is carried through utilizing the fuzzy C-means clustering algorithm; 2, the clustering quantity c, a fuzzy factor m, an algorithm iteration stop threshold Epsilon, the maximum iteration times max, a neighborhood window size and other artificial setting parameters are given; 3, a similarity matrix W of two pixels is calculated; 4, similarity rhoki of pixel pair types is calculated; 5, a membership matrix U is updated; 6, if ||U(t+1)-U(t)||<Epsilon, or t=max, iteration stops, U(t+1) is outputted, otherwise t=t+1, and the process turns to the step 4; and 7, for U(t+1), the maximum membership algorithm is employed to carry out deblurring operation, and label distribution is carried out to accomplish image segmentation. Through the method, three-portion optimization including improving a clustering center mode, introducing the partial space information and utilizing the intuitionistic fuzzy set information is accomplished, effects of noise resistance enhancement and segmentation precision improvement are realized, and an actual problem of high-precision segmentation for a brain MRI is solved.

A method for segmenting an image includes extracting unary potentials for pixels of the input image. These can be based for each of a set of possible labels, on information for a first channel in the image, such as in the visible range of the spectrum. Pairwise potentials are extracted for neighboring pairs of pixels of the image. These can be based on information for a second channel in the image, such as in the infrared range of the spectrum. An objective function is optimized over pixels of the input image to identify labels for the pixels. The objective function is based on a combination of ones of the extracted unary and pairwise potentials. The image is then segmented, based on the identified pixel labels. The method and system can provide an improvement in segmentation over methods which use only the visible information.

A method and apparatus that allows for the correction of multiple defective pixels in an imager device. In one exemplary embodiment, the method includes the steps of selecting a correction kernel for a defective pixel, determining average and difference values for pixel pairs in the correction kernel, and substituting an average value from a pixel pair for the value of the defective pixel.

The invention discloses an adaptive noise intensity video denoising method which is based on motion detection and is embedded in an encoder. The method comprises the following steps: (1) taking a sum of regularization frame differences in a neighborhood as an observed value, dividing input pixels into a static pixel and a dynamic pixel and using filters in different supporting domains for the two kinds of the pixels, wherein a filtering coefficient is adaptively determined according to noise intensity and an image local characteristic; (2) taking a single DCT coefficient or the sum of the several DCT coefficients as the characteristic, using AdaBoost as a tool to construct a cascade-form classifier and using the classifier to select a static block; (3) establishing a function model of connection between DCT coefficient distribution parameters of the video noise intensity and the static block and using the model to estimate the noise signal standard difference. By using noise intensity estimation embedded in the video encoder and a noise reduction technology provided in the invention, few computation costs can be used to acquire the parameters and the information needed by noise filtering. A time efficiency is good. Because a reliable clue is used to determine whether the pixels accord with a static hypothesis, the filter of the invention can effectively filter the noise and simultaneously maintain marginal sharpness of the static image. And motion blur caused by filtering in a motion area can be avoided.

A display device has an improved white balance in white display and excellent display quality, and includes a plurality of pixels each including four sub-pixels More specifically, the display device includes a plurality of pixels each including: a sub-pixel pair of a red (R) sub-pixel and a green (G) sub-pixel; and a sub-pixel pair of a blue (B) sub-pixel and a green (G) sub-pixel, wherein in most of the pixels, a product of an aperture area per sub-pixel and a light amount per unit aperture area, in each of the red (R) sub-pixel and the blue (B) sub-pixel, is approximately two times that of the green (G) sub-pixel.

The invention discloses a micro-grating sub-pixel three-dimensional optical image, which is formed by pixel array structures arranged on a plane, and the image contains sub-visual angle image information of multiple visual angles. The micro-grating sub-pixel three-dimensional optical image is characterized in that: each pixel consists of a plurality of sub-pixels; each sub-pixel corresponds to an image of one visual angle at the pixel; each sub-pixel is a grating image unit; and the stripe orientation of each grating image corresponds to each visual angle, and the periods of stripes represent color information. The making method comprises the following steps of: designing three-dimensional diffraction optical image data; designing a template image with a sub-pixel stereoscopic structure; generating a voxel image according to the image data and a template; and micro-shrinking a photoetching sub-pixel stereoscopic image unit to obtain a three-dimensional diffraction optical image formed by the sub-pixel stereoscopic unit. By the making method, three-dimensional images can be outputted in a digitized mode.

A depth image automatic registration process combining with texture information is mainly used to reconstruct the three-dimensional model of various actual objects, which comprises the steps: firstly extracting a texture image from scanning data or generating a texture image according a depth image, secondly extracting interest pixels in the texture image based on the characteristics of SIFT, and finding out candidate sets therein matched with the interest pixels through the crosscheck method, thirdly finding out correct matched pixel pairs in the candidate sets according to geometry information constraint, fourthly finding out matched apex pairs corresponding to the matched pixel pairs in a three-dimensional space, and calculating the rigid replacement matrix between two depth images, fifthly optimizing the result through using the improved ICP algorism, sixthly dividing the input sequences of several depth images into a plurality of bar type subsequences based on the registrations of two depth images, finally combining the subsequences through the strategy of forward searching, and constructing an integral three-dimensional model. The invention can fast register large-scale three-dimensional scanning data to generate a three-dimensional model, and has strong anti-noise capability and excellent universality.

An imager including a self test mode. The imager includes a pixel array for providing multiple pixel output signals via multiple columns; and a test switch for (a) receiving a test signal from a test generator and (b) disconnecting a pixel output signal from a column of the pixel array. The test switch provides the test signal to the column of the pixel array. The test signal includes a test voltage that replaces the pixel output signal. The test signal is digitized by an analog-to digital converter (ADC) and provided to a processor. The processor compares the digitized test signal to an expected pixel output signal. The processor also interpolates the output signal from a corresponding pixel using adjacent pixels, when the test switch disconnects the pixel output signal from the column of the pixel array.

The display device includes a display panel on which sub-pixel pairs are arranged in a lateral direction, and a parallax barrier shutter panel on which sub-openings that can be changed between a light transmittance state and a light-shielding state are arranged in a lateral direction. Arbitrary allocated number of adjacent sub-openings among the plural sub-openings belonging to a reference parallax barrier pitch are put into a light transmittance state, and the remaining sub-openings are put into a light-shielding state, so that a general opening is formed on the parallax barrier shutter panel. A sub-opening pitch of the sub-opening on the boundary part between the adjacent common driving areas is different from the sub-opening pitch of the other sub-openings.