41results about How to "Consistent Image Quality" patented technology

A control device determines whether an image generated by merging several concurrently picked-up images has consistent image quality on a display device. If determined No, image quality parameters set in each image pickup device are so controlled as to make the image quality of the merged image consistent. Therefore, the merged image can assuredly have consistent image quality. Further, a signal processing device detects, based on positions of nodes and attributes of cameras, a connection indicating which node is connected to which camera and with what attribute. The signal processing device in advance stores every detectable connection and a plurality of image processing programs corresponding to each connection, and selects and carries out one of the image processing programs corresponding to the detected connection.

An image reconstruction apparatus and related method. The amount of out- field-of view material for a CT scanner (IMA) with a given field of view (FoV) in a bore (B) is established. Based on the measurement, a hybrid-image reconstructor (RECONX) is configured to switch between different reconstruction algorithms.

Described herein is a cable length compensator for inclusion in video imaging systems such as X-ray video imaging systems. When such systems are installed at sites of use, cables must generally be installed in the signal path, and the lengths of these cables—which can affect signal resolution—generally cannot be predicted prior to the time of installation. The cable compensator may be situated in the signal path along with the cable to compensate the signal for the effects of the cable so that the desired gain is provided across the desired range of signal frequencies. The compensator includes a low frequency compensation path and a high frequency compensation path, wherein the low frequency compensation path provides a simple gain adjustment to low frequency signals and the high frequency path provides gain adjustment dependent on both signal frequency and cable length. The high frequency gain adjustment is preferably provided by an array of high-pass filters which provide a substantially flat response across the range of input frequencies, and at least one variable resistance which may be adjusted for the desired high-frequency gain.

The present invention is parallel image sequence bit rate controlling method for digital TV video coder. The input several video program sequences of different data sources or parallel image sequences of different spatial domain or frequency domain in the same data source, and the parallel encode unit is used to perform real-time MPEG-2 variable bit rate encoding of the image sequences. Super-frame is defined as the image frames of the image sequences in the same time, and super-image set is defined as the least common multiple of the image set sizes. The main control code rate control unit is used to perform layered and combined code rate control of the image frames, super-frame and super-image set, and the post-treating unit is used for code flow synthesis and code rate control of several compressed output data flows with the data being packaged in the multiplexer and fed to transmission channel via the buffering area.

A reflected or transmitted light scanner includes an illumination device for illuminating image material, a carrier for holding the image material, and a recording device for recording the light transmitted through the image material and for pixel by pixel conversion of the light into electric signals that can be used to generate original image signals in several colors as well as a defect signal. The reflected or transmitted light scanner further comprises a memory device for storing the image and defect signals, pixel by pixel; a computing device for generating low-pass signals from the image signals; a memory device for storing the low-pass signals, pixel by pixel; and a correction device for selecting between the image signal and the low-pass signal, or a combination of image signal and low-pass signal, for each pixel, in dependence upon the value or the position of the defect signal for the respective pixel.

The invention relates to a large zoom ratio continuous zooming projection lens. Optical system lenses comprise a focusing unit, a zoom unit, a first compensation unit, a second compensation unit, and a rear fixing unit. The units are arranged from a screen side to an image plane side along an optical axis. A diaphragm is disposed on the second compensation unit. Focusing is realized by back and forth movement of the focusing unit, and zooming is realized by moving the zoom unit, the first compensation unit and the second compensation unit in the same direction from the wide angle end to the telephotograph end along the optical axis, wherein in the zooming process, projection images are kept clear, the total distance from the first surface of the lens to the image plane is fixed, and all the lenses are made of glass which is frequently used in domestic, and are spherical lenses. The large zoom ratio continuous zooming projection lens is low in the cost and good in technology, is suitable for batch production, and can be widely applied to the field of mini projection.

A pigment dispersion includes a color pigment and a polymeric dispersant having at least one pending chromophore group covalently bound to the polymeric backbone of the polymeric dispersant through a linking group

wherein

• the color pigment is selected from the group consisting of monoazo pigments, disazo pigments, β-naphtol pigments, naphtol AS pigments, azo pigment lakes, benzimidazolone pigments, disazo condensation pigments, metal complex pigments, isoindolinone pigments, isoindolinine pigments, phthalocyanine pigments, quinacridone pigments, diketopyrrolo-pyrrole pigments, thioindigo pigments, anthraquinone pigments, anthrapyrimidine pigments, indanthrone pigments, flavanthrone pigments, pyranthrone pigments, anthanthrone pigments, isoviolanthrone pigments, aluminium pigment lakes, dioxazine pigments, triarylcarbonium pigments and quinophthalone pigments;
• the at least one pending chromophore group has a molecular weight which is smaller than 85% of the molecular weight of the color pigment;
• the at least one pending chromophore group occurs as a side group on the polymeric backbone and not as a group in the polymeric backbone itself or occurring solely as an end group of the polymeric backbone;
• the linking group consists of all the atoms between the polymeric backbone and the first atom of the aromatic group by which the pending chromophore group is linked to the polymeric backbone; and
• the at least one pending chromophore group has a similarity coefficient SIM of at least 0.75, with the similarity coefficient defined by:

wherein,

• M represents the number of atoms in the at least one pending chromophore group;
• P represents the number of atoms in the color pigment;
• C represents the largest number of atoms in common between the at least one pending chromophore group and the color pigment as one continuous structure; and
• t is an integer representing the number of times that the largest number of atoms in common C fits into the organic color pigment, without using atoms of the color pigment twice. A method for preparing the pigment dispersion wherein the polymeric dispersant is prepared by copolymerizing a monomer already containing the pending chromophore group is also disclosed.

A pigment dispersion includes a color pigment represented by formula (I):

The invention relates to a continuous zooming projection lens. An optical system lens group comprises a focusing group U1 with negative focal power, a focusing group U2 with positive focal power, a compensating group U3 with negative focal power and a back fixed group U4 with positive focal power, which are distributed along an optical axis in sequence from the screen side to the image plane side; the focusing is realized by the back-and-forth movement of the U1 group; the zooming is realized by the homodromous movement of the U2 and the U3 from the wide angle end to the remote shooting end along the optical axis; in the zooming process, the total distance from the first surface of a lens to the image plane is not changed; the projection lens has the characteristic of achieving satisfactory imaging quality on the image plane of a longer back working distance, and the like; and the lenses all adopts spherical lenses, has high manufacturability and is suitable for mass production.

The invention provides a combined secondary imaging vision light source which comprises upper and lower concave lenses, upper and lower ring light sources, an upper double-glueed right-angle prism, aquadruple prism and a lower double-glueed right-angle prism, wherein the upper double-glueed right-angle prism, the quadruple prism and the lower double-glueed right-angle prism are located between the upper and lower ring light sources and successively superimposed from top to bottom. When measuring is carried out, the light path of an upper object above the upper concave lens passes through theupper concave lens and the upper double-glueed right-angle prism, directly comes into the quadruple prism, is refracted at right angle by the upper refracting surface in the quadruple prism, directlypasses through the quadruple prism, and then directly comes into an imaging camera for imaging. The light path of a lower object below the lower concave lens passes through the lower concave lens andthe lower double-glueed right-angle prism, directly comes into the quadruple prism, is refracted at right angle by the lower refracting surface in the quadruple prism, directly passes through the quadruple prism, and then directly comes into the imaging camera for imaging. According to the invention, the light paths of the quadruple prism are used; optical path difference is prevented; and the imaging quality of the upper object and the lower object is completely consistent.

A light system includes a light source for emitting divergent light, and only one imaging lens arranged in front of the light source in the divergent light for imaging the divergent light directly received from the light source, where the imaging lens is one-piece fabricated part and comprises a first lens section with a non-structured and convex light entry surface curved in a direction of the light source for the entry of the divergent light of the light source into the imaging lens, a second lens section with a convex light exiting surface curved in a light propagation direction for imaging the light entered, and a mask arranged between the first and second lens sections for modifying the light entered into the first lens section before leaving the light exiting surface.

Provided is a method for delivering a medical fluid. The method includes delivering a fluid volume, which includes contrast and/or a flush fluid, at a preselected total volumetric flowrate during a first duration of a fluid delivery procedure. The amount of the contrast agent and the flush fluid in the fluid volume can be controllably varied during the first duration of the fluid delivery procedure so as to substantially maintain a preselected total volumetric flowrate throughout the first duration of the fluid delivery procedure. Also provided is a fluid delivery system capable of performing this method.

A networked product imaging system includes devices that provide the production of imaged goods. Sellers are easily integrated into the network with minimal or no inventory requirements. Customer requirements are provided to a central computing device (CCD) that has two-way communication with a plurality of geographically separated product image forming devices. The central computing device determines specifications for forming the image on the blank product in accordance with the customer's order. The central computing device selects a product image forming device from the plurality of geographically separated product forming devices for fulfilling the order, based upon factors that include the specification of the product image forming device available, the product image forming inventory and the blank product inventory available at the geographic location of the product image forming device. The selected product image forming device forms the image on the blank product at the remote location.

The invention relates to an imaging system. The imaging system comprises a front lens group and a back lens group; from an object side to an image side, the front lens group and the back lens group are orderly arranged along an optical axis; the front lens group has positive focal power, and the back lens group has positive focal power; the back lens group is the fixed lens group with a fixed location, and the front lens group is a focusing lens group and capable of moving along the optical axis; the focal length f of the imaging system and the focal length fg1 of the front lens group satisfies a condition that the fg1/f is more than 1 and less than 1.1; an objective image magnification is between 0 time and a large magnification, and the large magnification is greater than 0.4 times; theimaging object distance is to infinity object from short-distance object, and the short-distance range is within 0.1m. The lens imaging frame is large and the distortion is low, the resolution can achieve 90 million pixels, the imaging is better, more plentiful and delicate, the shallow depth of field effect is more excellent, and the environment change resistance is strong.