76results about How to "Reduce image degradation" patented technology

In part, the invention relates to an image data collection system. The system can include an interferometer having a reference arm that includes a first optical fiber of length of L1 and a sample arm that includes a second optical fiber of length of L2 and a first rotary coupler configured to interface with an optical tomography imaging probe, wherein the rotary coupler is in optical communication with the sample arm. In one embodiment, L2 is greater than about 5 meters. The first optical fiber and the second optical fiber can both be disposed in a common protective sheath. In one embodiment, the system further includes an optical element configured to adjust the optical path length of the reference arm, wherein the optical element is in optical communication with the reference arm and wherein the optical element is transmissive or reflective.

Displays are provided with circuitry performing color correction to compensate for the displays' luminance and chrominance transfer characteristics. Some techniques are suitable for RGBW displays and for subpixel-rendered displays. Some displays include an external light source (e.g. a backlight unit in LCDs), and the color correction is coordinated with dynamic control of the light source.

Disclosed is an image sensing apparatus comprising a plurality of two-dimensionally arrayed pixels each having a photodiode and a floating depletion area for temporarily storing a charge signal that has accumulated in the photodiode; an output unit that outputs the charge signal, which has been transferred to the floating depletion area, successively pixel by pixel; a scanning unit having a reset mode for resetting the photodiodes and floating depletion areas successively by prescribed unit, a first transfer mode for transferring the charge signal, which has accumulated in the photodiodes, to the floating depletion areas successively by the prescribed unit at prescribed time intervals upon lapse of a prescribed period of time from start of reset, and a second transfer mode for transferring the charge signal, which has been transferred to the floating depletion areas, to the output unit. Before operation of the second transfer mode is performed with respect to a plurality of the prescribed units, the scanning unit transfers the charge signal, which has accumulated in the photodiodes, to the floating depletion areas successively by the prescribed unit at the prescribed time intervals with respect to the

A defective pixel detecting device determining defective pixels as correction targets in an imaging device that produces image signals is provided, and the device includes: defect information storage configured to store priority of defective pixels to be corrected; a defective pixel detector configured to detect defective pixels by comparing levels of imaging signals from the imaging device with a predetermined detection level; a priority setter configured to set priority of the detected defective pixels, based on the levels of the imaging signals of the defective pixels detected by the defective pixel detector; and a correction target determiner configured to newly determine defective pixels to be corrected based on the priority of the defective pixels out of the defective pixels that are currently detected by the defective pixel detector and the defective pixels to be corrected stored in the defect information storage, determining priority of the newly determined defective pixels to be corrected, and storing the priority of the newly determined defective pixels to be corrected in the defect information storage.

A touch screen for LCDs which uses a plurality of shockwave detectors disposed around the periphery of the viewing area to detect the location of a touch or tap which is the point of origin of an expanding shockwave.

A plurality of coil elements (18, 18') and corresponding receivers (26) define a plurality of channels, each carrying a corresponding partial k-space data set (60, 64). One or more processors (30) generate (80) a first image representation (76) based on the plurality of partial k-space data sets, generate a relative sensitivity map (82) for each of the channels, project (90) the first image representation (76) with each of the relative sensitivity maps (82) to generate a plurality of recreated k-space data sets (92), and each partial k-space data and the corresponding recreated k-space data set are combined to generate substituted k-space data sets (96). The substituted k-space data sets are reconstructed (100) into a plurality of images (102) which are combined (104) to create a final image (106).

A method for post-processing compressed image data for reducing blocking artifacts is suggested, in which a set of primary image data (PID) is decomposed into data sets (IID1, IID2) containing the fine structure of the image with structure being smaller than the blocking artifacts and without the blocking artifacts and structures being larger than or comparable to the blocking artifacts as well as the blocking artifacts, respectively. In the decomposition of the primary image data (PID) a non-linear filtering process (F1) is involved. After decomposition of the primary image data (PID) a filtering process (F3) can be applied to the set of intermediate image data (IID2) containing larger details of the image as well as the blocking artifacts. Therefore, in the process of filtering out the blocking artifacts, the fine structure of the image is not influenced.

An image projecting apparatus enables the formation of a projected image faithful to original image information by reducing degradation in the projected image due to decrease in imaging performance of a projection optical system. Image information is processed by an image processing device, which includes a first and a second image processor. A light modulating device modulates a flux of light emitted by an illumination optical system based on the processed image information. The modulated flux of light is projected on a screen by a projection optical system. If the image information processed by the first image processor in a pixel region is not within a representable modulation range of the light modulating device, the image information is processed by the second image processor.

Disclosed are imaging systems, methods, and computer program products that generate estimates of scattered radiation in tomographic imaging systems, such as cone-beam computerized tomography (CBCT) systems, and the like. In an exemplary embodiment, a first group of projections is taken of an object with the radiation covering a wide band of the object, and a second group of projections is taken of the object with the radiation covering a narrower band of the object. The projections of the second group cover less of the object, but have less scattered radiation. The scattered radiation within the narrower band may be estimated from differences between projections from the first and second groups, or from representations thereof.

The present invention provides an ink jet printing apparatus configured to allow the ejection performance of a print head with a large number of nozzles densely arranged therein to be kept in a favorable condition by preliminary ejection and to enable degradation of images caused by the preliminary ejection to be alleviated. Preliminary ejection data generation unit is provided which generates preliminary ejection data designed to allow ink not contributing to image printing to be ejected through nozzles 103A and 103B in a print head 21-1. The preliminary ejection data generation unit generates preliminary ejection data designed to allow the ink to be preliminarily ejected onto a print medium through the nozzles 103B, which are included in the plural types of nozzles and which offer a smaller ejection amount than the other nozzles 103A.

A computer-implemented method and user interface for organizing graphical operations and displaying performance data of a graphics processing pipeline. More specifically, embodiments provide a convenient and effective mechanism for enhancing graphics processing by automatically determining and grouping graphical operations with similar state attributes relating to one or more units of the graphics pipeline. As such, pipeline adjustments for reducing execution time of one graphical operation may benefit other graphical operations with similar state attributes, thereby reducing the number of pipeline adjustments and allowing more careful selection of graphical operations to increase performance and reduce image degradation. Also, the display of the grouped graphical operations also provides information for determining the troublesome operations. In one embodiment, the groups are ranked by their respective execution time. Additionally, other forms of performance data may be displayed for graphical operations with similar state attributes, thereby providing additional information to guide enhancement operations.

A drive circuit is configured to drive a display panel including pixels and a backlight including LEDs. The display panel includes a critical light transmission level that is a minimum level for causing each pixel to respond in a predetermined time upon an input of an image. The drive circuit includes first and second circuits. The first circuit is configured to divide the image into areas and determine brightness levels of the LEDs for the areas based on the image. The second circuit is configured to determine a light transmission level based on the image and the brightness levels such that the level is higher than the critical level.

A lithographic apparatus and method are used to pattern a substrate. The system and method includes an illumination system for supplying a projection beam of radiation, an array of individually controllable elements for imparting the projection beam with a pattern in its cross-section, and a substrate table for supporting the substrate during an exposure operation. A projection system projects the patterned beam onto a target portion of the substrate. A control system sends a control signal for setting each said individually controllable elements to a desired state. A compensation device for adjusting the control signal applied to a first individually controllable element based on the control signal to be applied to at least one other individually controllable element. This can be done to reduce image degradation arising from cross-talk between individually controllable elements.