32results about How to "Resolution is deteriorated" patented technology

A high-resolution nuclear imaging detector for use in systems such as positron emission tomography includes a monolithic scintillator crystal block in combination with a single photomultiplier tube read-out channel for timing and total energy signals, and one or more solid-state photosensor pixels arrays on one or more vertical surfaces of the scintillator block to determine event position information.

In a measuring space of the object (1), an essential measurement region (41, 61, 71, 81, 111, 131) having a center region of the measuring space and a plurality of peripheral measurement regions (42, 62, 63, 72, 82, 112, 132) which do not have any region overlapped with the essential measurement region are set. Then, the essential measurement region is combined with a selected peripheral portion of the plurality of the peripheral measurement regions to measure in a preceding manner a nuclear magnetic resonance signal from the object as data of the measuring space. The essential measurement region is combined with the peripheral measurement region of the plurality of the peripheral measurement regions which has not been selected in the preceding measuring step to measure a nuclear magnetic resonance signal from the object as data of the measuring space. Sequentially, the essential measurement region is combined with the peripheral measurement region having not been measured in a preceding measuring step to measure a nuclear magnetic resonance signal from the object. The data of the essential measurement region and the data of the peripheral measurement region thus measured is supplemented with the data of the peripheral measurement region measured in the preceding measuring step to generate data of the measuring space.

Image quality deterioration due to a drop in resolution or lowering of S / N ratio while reducing the amount of data stored during a 3D data acquisition process, and shortening the time from the start of an examination to the end of imaging. The method and apparatus of this invention perform, in parallel with the 3D data acquisition process, addition of sinograms, reading of subsets of the sinograms having been added, and image reconstruction. Consequently, the amount of data stored is reduced, and the time from the start of an examination to the end of imaging is shortened. At the same time, since 3D iterative reconstruction is not accompanied by conversion from 3D data to 2D data, a drop in resolution due to errors occurring with the conversion from 3D data to 2D data is avoided. The 3D iterative reconstruction can directly incorporate processes such as an attenuation correction process. It is thus possible to avoid also a lowering of S / N ratio resulting from an indirect incorporation of such processes.

A method of controlling a camera system having a plurality of solid-state imaging devices is provided. The method includes supplying a horizontal addition control signal and a vertical addition control signal, phases of which are controlled, to the plurality of solid-state imaging devices; selecting pixel column(s) and row(s) of the plurality of solid-state imaging devices in accordance with the horizontal addition control signal and the vertical addition control signal; adding a plurality of pixel signals to each other, the plurality of pixel signals being adjacent to each other in a horizontal direction, in a vertical direction, or in both horizontal and vertical directions, of the selected pixel column(s) and row(s); and processing a luminance signal and a color signal using the added pixel signals and adding a sync signal to the luminance signal and the color signal so as to output a color image signal.

The noise reduction process is appropriately changed according to a proportion of the facial region in an angle of view, thereby minimizing deterioration of background resolution as well as removing wrinkles and blemishes in the facial region.

There is provided a method for deciding an image data reduction ratio in image processing which enables performance of stable positioning even on an unclear image, the method being a method for deciding an image data reduction ratio in image processing where an object to be searched that is similar to a pre-registered image is searched to be positioned out of the image to be searched by use of a pattern model corresponding to the registered image, the method including the steps of: computing a sharpness of each edge point based on the edge points with reference to an edge image where the edge points are extracted from image date; and deciding an image data reduction ratio based on each edge sharpness such that positional accuracy of the edge points becomes higher than a predetermined value.

The disclosed is to provide an image signal processor and its method in which the enhancement of resolution and the effective reduction of noise are compatible. The image signal processor is provided with an edge character detector that detects a character of an edge of an object, an image signal frequency zone limiter that executes a noise removing process, an image signal frequency zone enhancer that executes a resolution enhancing process and a gain controller that changes each intensity of the image signal frequency zone limiter and the image signal frequency zone enhancer according to an output result of the edge character detector.

The present invention relates to a photosensitive composition, which is capable of being irradiated with high energy beam having a wave length of 1 to 300 nm band. The photosensitive composition includes a binder resin; and a photoelectron absorbent, capable of being excited with photoelectron emitted from the binder resin that absorbs the high energy beam, when the binder resin is irradiated with the high energy beam.

To provide an optical writing device that outputs image light to be recorded to a display recording medium. An optical element thereof includes a two-dimensional periodic structural body including periodic structure sections sectioned along a direction orthogonal to the direction along which transparent layers and light absorption layers are arranged alternately in a repeated manner. At least a part of the periodic structure sections is in a periodic structure in which the transparent layers and the light absorption layers are arranged alternately by varying phases of spatial frequencies of the transparent layers neighboring in the orthogonal direction. Repeated period pitches of the transparent layers and the light absorption layers in the two orthogonal directions of the two-dimensional periodic structural body are set to match with each other, and the repeated period pitches are set to be narrower than a layout pitch of the pixels of the spatial light modulating element.

The present invention is concerned with providing refined plant isolates that can be used as starting materials for the production of functional food ingredients, such as taste enhancers, through an isolation process that employs ion exclusion chromatography. More particularly, the present invention provides a refined plant isolate comprising at least 30% by weight of dry matter of water soluble plant components selected from fructose, glucose, proteinaceous matter of plant origin, acids and potassium, said isolate further being characterized in that at a concentration of 40° Brix the isolate: •contains at least 0.3 wt % of glutamate; •contains at least 500 ppm of K+; •contains less than 300 ppm of Ca2+; •contains less than 700 ppm of Mg2+; •contains less than 1 wt. % of components capable of passing an ultra filtration membrane having a molecular weight cut off of 250 kDa; wherein the concentration ratio ([Ca2+]+[Mg2+]) / [K+] does not exceed 5:100, each of said cation concentrations being expressed in ppm.

A photomask blank has a first layer, a second layer, a third layer and a fourth layer. The first layer has a chromium content of 40 atomic % or less, an oxygen content of 38 atomic % or more, and a nitrogen content of 22 atomic % or less. The second layer has a chromium content of 38 atomic % or less, an oxygen content of 30 atomic % or more, a nitrogen content of 18 atomic % or less, and a carbon content of 14 atomic % or less. The third layer has a chromium content of 50 atomic % or less, an oxygen content of 30 atomic % or less, and a nitrogen content of 20 atomic % or more. The fourth layer has a chromium content of 44 atomic % or less, an oxygen content of 20 atomic % or more, a nitrogen content of 20 atomic % or less, and a carbon content of 16 atomic % or less.

An image display device includes an image light generation unit configured to generate image light, a projection system optical unit configured to project the image light, a correction system optical unit configured to correct aberrations, a first diffraction element configured to deflect the image light incident on a first incident surface, and a second diffraction element configured to deflect the image light incident on a second incident surface. The projection system optical unit, the second diffraction element, the correction system optical unit, and the first diffraction element are arranged in this order in a direction of the image light emitted from the image light generation unit, and the image light deflected and dispersed into rays of respective wavelengths by the second diffraction element is focused by the first diffraction element.

An image processing apparatus is provided which minimizes reduction in S / N ratio and deterioration in resolution feeling at the lens periphery when the peripheral light amount drop correction of the lens is performed. An image processing LSI to perform the peripheral light amount drop correction of the imaging lens includes a space-direction noise removal correction part and a time-direction noise removal correction part. As the distance from the lens center position increases, the space-direction noise removal correction part reduces the noise reduction correction intensity to the image region to which the light amount drop correction gain is added in each image. As the distance from the lens center increases, the time-direction noise removal correction part increases the noise removal correction intensity to the image region to which the light amount drop correction gain is added in each image.