109 results about "Image resolution" patented technology

There are provided a method and apparatus for illumination and color compensation for multi-view video coding. A video encoder includes an encoder (100) for encoding a picture by enabling color compensation of at least one color component in prediction of the picture based upon a correlation factor relating to color data between the picture and another picture. The picture and the other picture have different view points and both corresponding to multi-view content for a same or similar scene.

A method for enhancing the temporal resolving power of an optical signal recording system such as a streak camera or photodetector by sinusoidally modulating the illumination or light signal at a high frequency, approximately at the ordinary limit of the photodetector's capability. The high frequency information of the input signal is thus optically heterodyned down to lower frequencies to form beats, which are more easily resolved and detected. During data analysis the heterodyning is reversed in the beats to recover the original high frequencies. When this is added to the ordinary signal component, which is contained in the same recorded data, the composite signal can have an effective frequency response which is several times wider than the detector used without heterodyning. Hence the temporal resolving power has been effectively increased while maintaining the same record length. Multiple modulation frequencies can be employed to further increase the net frequency response of the instrument. The modulation is performed in at least three phases, recorded in distinct channels encoded by wavelength, angle, position or polarization, so that during data analysis the beat and ordinary signal components can be unambiguously separated even for wide bandwidth signals. A phase stepping algorithm is described for separating the beat component from the ordinary component in spite of unknown or irregular phase steps and modulation visibility values. This algorithm is also independently useful for analyzing interferograms or other phase-stepped interferometer related data taken with irregular or unknown phase steps, as commonly found in industrial vibration environments.

The invention discloses a segmentation method of pathological section unconventional cells based on a multi-scale hybrid segmentation model. The method comprises steps that positive and negative samples are respectively scaled to low-resolution, medium-resolution and high-resolution images, the full convolutional network algorithm is utilized for training to acquire a convergent low-resolution segmentation model, a medium-resolution segmentation model and a high-resolution model; a multi-scale hybrid segmentation model is acquired through fusion by a model integration method; after the effective discriminating area of a new pathological section is processed through utilizing the data enhancement method during testing, the processed effective discriminating area is inputted to the multi-scale hybrid segmentation model, the probability of each pixel in the effective segmentation area is outputted, pixels with probability values greater than the threshold t are taken as abnormal cell pixels and are recorded as 1, remaining pixels are taken as normal cell pixels and are recorded as 0, binary images predicted by the multi-scale hybrid segmentation model are acquired, and post-processingon the binary images is carried out to acquire the final segmentation result. The method is advantaged in that high precision is realized, and a Dice value is above 0.869.

The systems and methods described herein may allow diffusion curve images to be displayed by a variety of applications without requiring specialized graphics hardware to render the images. The system may provide mechanisms to convert a diffusion curve representation to an alternate representation in a scalable, portable format. The conversion may include a tessellation operation, and may produce a mesh of shapes (e.g., triangles) for which diffusible attribute values (e.g. color and blur) are assigned to each node. Tessellating an image may include generating a piecewise linear approximation of the diffusion curves and triangulating the image to generate the mesh. Color values for each channel may be assigned by solving a sparse linear system in the triangle domain. The alternate representation may be displayed by another application using various interpolation techniques. The alternate representation may be resolution-independent and compact, as compared to other representations used to display diffusion curve images.

The invention relates to a multi-screen splicing method, a multi-screen splicing device and a multi-projection splicing large screen. The method comprises the following steps of observing a multi-screen model according to an analog camera arranged on an observation position, observing to acquire a proportion of the size of each screen of a multi-screen image, segmenting a received main frame imageaccording to the observed proportion of the size of each screen to acquire a sub-picture corresponding to each screen, stretching the sub-picture according to an actual resolution ratio of each screen on an observation site to acquire a sub-image actually displayed on each screen, and separately displaying the sub-image on each screen. According to the multi-screen splicing method, the scheme operation process is simple and efficient, and the quick splicing and displaying effect of the multiple screens can be achieved.

The invention is based on a method for examining structures on a semiconductor substrate. The structures are imaged with X-radiation in an X-ray microscope. The wavelength of the X-radiation is established as a function of the thickness of the semiconductor substrate in such a way that both a suitable transmission of the X-radiation through the semiconductor substrate and a high-contrast image are obtained. As a result, the structures can be observed continuously with short exposure times, high resolution and even while they are in operation.

The invention relates to an amorphous silicon image sensor with a storage capacitor structure, comprising a plurality of pixel units. Each pixel unit comprises a grid wiring, a first insulating layer, an active layer, a data wiring, a second insulating layer, a storage capacitor, a photosensitive diode, a passivation layer and a bias voltage wire, wherein the storage capacitor is arranged below the photosensitive diode; a lower electrode of the storage capacitor is formed on a glass substrate or the first insulating layer, and an upper electrode of the storage capacitor is formed on a dielectric layer and connected with a source electrode; a first electrode of the photosensitive diode is in co-electrode with the upper electrode of the storage capacitor; and a second electrode of the photosensitive diode is conductive with the lower electrode of the storage capacitor and the bias voltage wire. By means of the amorphous silicon image sensor disclosed by the invention, the charge storagecapacity of the pixel units is increased under the condition of not enlarging or reducing pixel dimensions by arranging the storage capacitor below the photosensitive diode, and therefore the purposeof enhancing the signal dynamic range of a thin film transistor matrix panel under the precondition of not losing the resolution ratio of the thin film transistor matrix panel is achieved.

The invention relates to a low-resolution face image rebuilding method based on a super-resolution rebuilding technology and belongs to the field of image processing. The rebuilding method comprises enabling an original image to undergo normalization based on face three-point positioning, and obtaining a to-be-rebuilt normalization face image; then denoising a to-be-rebuilt low-resolution image by generating a training set, determining a learning sample by ambiguity estimation, and obtaining a finally rebuilt high-resolution image by locally linear embedding (LLE) learning. The adopted face image normalization method not only is accurate, but also is consistent with a training set normalization method, and improves accuracy of the low-resolution face image. The super-resolution face image rebuilding method based on low frequency components is adopted to manufacture large-size rebuilt image of the low-resolution face image, and rebuilding of the low-resolution face image is achieved well.

The invention relates to an online intelligent fault diagnosis method of a power electronic circuit based on FRFT and IFSVC, which belongs to the field of signal processing and power electronic fault test. The method comprises the following steps: acquiring outputting signals of a to-be-tested power electronic circuit periodically at the proper testable node of a circuit; converting the acquired voltage or current signals in the way of FRFT to extract fault characteristics so as to form samples; and using a fault dictionary to work out so as to locate fault elements. The invention has the advantages of simple method, higher fault distinguishability, diagnosis accuracy, and the like; in addition, the invention can also improve the automation degree of the online fault diagnosis of the power electronic circuit.

The invention discloses a carbon-based resistive flexible pressure sensor. The sensor of a four-layer film structure comprises a flexible polyimide thin film layer, a silver electrode layer, a flexible graphene and oxidized graphene composite thin film layer and an oxidized graphene film insulated protective layer. When the pressure sensor bears a pressure or bending strain occurs, the bearing condition of the pressure sensor can be obtained by measuring the resistance change of the two ends of a silver electrode. The whole carbon-based resistive flexible pressure sensor is of a film-shaped structure, the flexibility is high, and the pressure sensor can work normal in any bending angle; the sensitivity is high, and the strain coefficient ranges from 2.1 to 3; pressure measurement ranges widely from 10Pa to 900kPa; the resolution is very high, dynamic response is super-rapid, and dynamic high-frequency pressure signals reaching 10kHz can be measured; and the stability is high, and the pressure sensor passes more than 8000 repeated stability test. The pressure sensor is simple in preparation technology, low in equipment cost, suitable for wearable equipment, and can be used for measurement of physical quantities as pressure and strain.

A video signal processing device including a specification information obtaining unit for obtaining specification information indicating specifications of a monitor connected to a digital video output terminal, a selecting operation receiving-unit for receiving a user selecting operation for selecting a type of analog video output terminal for a monitor connected to the analog video output terminal, a setting operation receiving unit for receiving a user setting operation for prioritizing one of the specification information obtained by the specification information obtaining unit and the user selecting operation received by the selecting operation receiving unit, and a determining unit for determining a resolution of a video signal to be output on a basis of the specification information obtained by the specification information obtaining unit, the user selecting operation received by the selecting operation receiving unit, and the user setting operation received by the setting operation receiving unit.

A system and method to improve the quality of noisy computer tomography (CT) images that have been generated by a CT scanner running on low-power. The image noise is reduced by restoring crucial quantitative image information. The system does not fail when applied to sparsely-sampled and/or low-resolution projection data and is clinically viable in that it is a method that can be embodied in a practical, real-world system that can be used routinely in remote sites with limited access to electric power, and relies only on data that are available from standard medical CT scanners.

The present invention relates to a page printer control method, a page printer therefor, for compressing print data for one page and for storing the compressed data in a memory, so that even when a printing resolution is changed in due to a memory shortage, the resolution can be used for all the pages of a document. According to the present invention, a system for controlling a page printer includes a memory, a controller for drawing print data, a compression circuit for compressing drawing data, an expanding circuit for expanding the compressed data, and a video output circuit for outputting expanded data to the printer engine as a video signal. The controller detects the remaining capacity of the compression data area in the memory, and when a memory shortage is detected, i.e., when insufficient storage capacity is available, the printing resolution is changed and the drawing process is performed, starting at the beginning of the job.

Disclosed is a high resolution image obtaining apparatus and method. The high resolution image obtaining apparatus may divide an input image frame into a background region and foreground region and apply an optimized resolution enhancement algorithm to each region, thereby effectively obtaining a high resolution image frame with respect to the input image frame.

The invention discloses a rear naked-eye three-dimensional (3D) display and a display method. The rear naked-eye 3D display comprises an image display unit, an optical element and a backlight module, wherein the image display unit can provide a display panel of a fully-high-resolution parallax image; the optical element propagates backlight energy to different visual areas in space; and the backlight module is formed by combining a switch and small backlight units, and the brightness of each small backlight unit can be freely controlled. Light which is emitted by the backlight module passes through the optical element, penetrates through the image display unit and then is used for loading the parallax image, so different parallax images can be seen through eyes at different spatial positions, or different images can be seen at different viewpoints. Meanwhile, by controlling the specific brightness combination of the small backlight units in the backlight module, a high-resolution two-dimensional (2D) image can be played. By the invention, under the condition that 3D display is realized, adding of glasses is eliminated, the resolution of the display is prevented from being reduced, and 2D/3D bidirectional switching without resolution reduction is realized.

The invention discloses a three-axis capacitive micro accelerometer, which comprises an SOI substrate, a mass block, a flexible beam, a tooth pivot, a fixed electrode and a movable electrode. The accelerometer has a structure of a central symmetry pattern, and the mass block passing through an XY plane in a Z-axis direction senses the accelerated speed in three orthogonal directions respectively.Due to the design of a beam in the shape like a Chinese character hui on the XY plane and the flexible beam in the Z-axis direction, the sensitivity and resolution of the accelerated speed in three orthogonal directions are improved. In addition, due to the application of the SOI process, the micro accelerometer has the advantages of low parasitic capacitance, low short channel effect, high speed, high integrated level, low power consumption, high temperature resistance, radiation resistance and the like. Finally, the novel method effectively solves the problem of package of microcomponents through the micropackage technology.

Complex magnetic resonance (MR) image data, acquired from an examination subject that has at least two different spin species, are processed in a method and a device. At least one MR parameter that influences data acquired in an MR data acquisition is determined with spatial resolution. Complex image data are respectively acquired with each of multiple acquisition units in an MR data acquisition at multiple echo times, such that a phase difference between the first spin species and the second spin species is different at least two of the echo times. For multiple image points, a value of the at least one MR parameter is determined so that a function that depends on the at least one MR parameter and the corresponding image point in the complex image data satisfies an extreme condition.

The invention discloses a high-power terahertz continuous wave two-dimensional imaging system which comprises a duplexer, a two-dimensional scanning platform, a terahertz continuous wave emitting module, a terahertz continuous wave receiving module, a TPX lens, a data collecting and processing module, an image processing module and an image display unit. The high-power terahertz continuous wave two-dimensional imaging system has the advantages that frequency exists at the terahertz wave band, the emitting power of the emitting module is high, and the system is simple in structure, small in size and high in resolution ratio.

A recording medium and a method for previewing and selecting digital audio/video data unit on the recording medium are provided. The recording medium includes an audio/video pack of the original film, an audio/video pack of the preview film, a background page, and a page control descriptor. After having received a switch button information from a user, a medium reproducing system reads, de-multiplexes, and decodes the information correspond to a specified audio/video pack of the preview film. The medium reproducing system also composes the decoded video data of the background page and the decoded video data of different resolutions to output to a display.

The invention relates to a spatial resolution calibration device and a spatial resolution calibration method for distributed fiber-optic sensing. The spatial resolution calibration device and the spatial resolution calibration method for the distributed fiber-optic sensing are easy to understand and operate; and the spatial resolution of various distributed fiber-optic sensors is objectively and accurately calibrated, and a reference is provided for the work such as apparatus selection and purchasing, performance evaluation, monitoring design, measurement and data analysis of a technician. The technical scheme is that: the spatial resolution calibration device for a distributed fiber-optic sensing demodulator is characterized by comprising a water bath which is divided into two parts, wherein one side of the water bath is a low-temperature tank, and the other side of the water bath is a high-temperature tank with a heater; a cover plate is arranged on the water bath; and a reel holder is vertically arranged on each of the two sides of a middle partition plate in the water bath. The device and the method are applied to the spatial resolution calibration of modulation apparatuses such as a Raman optical time-domain reflectometer (ROTDR) and a Brillouin optical time-domain analyzer (BOTDA)/Brillouin optical time-domain reflectometer (BOTDR).

The present invention relates to a super-resolution image quality evaluation method. The method comprises: employing a pixel corresponding relation between a low-resolution image and a super-resolution image to obtain a corresponding relation between local image blocks, respectively solving the energy and the texture information of the low-resolution image and the super-resolution image, and obtaining the vision similarity between the changing of the two features. The final super-resolution image quality is obtained through evaluation of the vision similarity of the local image blocks of the low-resolution image and the super-resolution image. The experiment result shows good effects in the quality evaluation of the super-resolution image.

A driving apparatus for a plasma display panel with a pulse generator to supply an alternating pulse to an electrode, and an energy recovering unit to store charges from a discharge cell when the pulse voltage decreases or to output the stored charges to the discharge cell when the pulse voltage increases. The energy recovering unit has a magnetic switch, coupled with the discharge cell and an energy storage capacitor, with variable inductance to control transient time when the pulse transitions from a first voltage to a second voltage. The transient time is based on LC resonance of the magnetic switch inductance and panel capacitance, and can be reduced to improve resolution of the panel. Insulated gate bipolar transistors can be used with the magnetic switches to reduce power loss during switching and in the on-state, and can sustain high voltages necessary for high concentration Xe discharge gas.

The invention discloses a power system real-time picture Web interface showing method. The method mainly includes the steps that electrical equipment is monitored and state data of the electrical equipment are collected by a back-end server; the real-time data are rendered by a real-time picture issuing server to form a complete interface layer; after it is detected that a real-time picture issuing server website is input through terminal equipment, an interface control script is sent by the real-time picture issuing server to acquire the size and resolution ratio information of the terminal equipment, and a virtual picture same with the terminal equipment in size is drawn according to the size and resolution rate information and is sent to the terminal equipment through the virtual interface; the virtual picture is received by the terminal equipment, and the virtual picture is rendered through the canvas function of a browser kernel. Files suitable for the picture size of the terminal equipment can be output through the power system real-time picture Web interface showing method according to the screen size and resolution ratio information of the terminal equipment.

Descriptions can describe or contain document contents and layout. Some contents can be images and, instead of being included as image data in the description, can be image references. An image reference can be used to obtain an image, in the form of image data, from an image server. A printer can print the document after obtaining needed images from image servers. The image data often contains an image whose resolution does not match the resolution that the printer can properly print in the document. The image server can prepare image data with the correct resolution or can stream image data through a data connection to the printer in a hierarchical image format. A printer can receive a stream of hierarchically formatted image data until a desired resolution is reached and then simply close the data connection to cut off the stream of image data.

The invention relates to a calibration technology-based encoder precision improving method and belongs to the technical field of mechatronics and sensor measurement. According to the method, while a high resolution and low precision encoder is prevented from hardware increase and encoder resolution reduction, precision of the encoder is improved via a polynomial calibration algorithm; the polynomial calibration algorithm and calibration parameters are stored in a programmable digital processor in the encoder; when the encoder works, the calibration parameters are called via the polynomial calibration algorithm for calibrating an encoder angle, and the precision of the encoder can be improved by more than 10 times. Via the method disclosed in the invention, the precision of the encoder is improved while the resolution of the encoder is not compromised. The method is suitable for data processing operation of all kinds of high resolution and low precision encoders.

The invention discloses an image compression method based on multi-scale feature coding. The image compression method comprises the steps: obtaining a selection vector through the averaging of the absolute values of gradient spectrums of image features of a training set, and guiding different channel features to select the coding resolution through the selection vector; meanwhile, recovering the features of low-resolution coding at a decoding end through a super-resolution network; and finally recombining the features of low-resolution coding with the features of high-resolution coding to forma complete feature spectrum, and mapping the complete feature spectrum back to an original image. According to the image compression method, difference processing is carried out according to the characteristics of the image characteristics, and the characteristics easy to recover from the context information are transmitted at low resolution, so that the code rate is saved; and for complex fine features, high-resolution transmission is adopted, so that the loss degree is reduced.