32 results about "Resolution Property" patented technology

Disclosed are: a photocurable resin composition which can be developed with an alkali, has excellent resolution properties, and enables the production of a cured article having excellent (wet) heat resistance and thermal impact resistance; a dry film; a cured product of the composition; and a printed wiring board produced using the cured product. The photocurable resin composition is characterized by comprising a resin containing a carboxyl group, a photopolymerization initiator, and surface-treated neuburg siliceous earth particles.

An embodiment in accordance with the present invention provides a method for applying task-based performance predictors (measures of noise, spatial resolution, and detectability index) based on numerical observer models and approximations to the local noise and spatial resolution properties of the CBCT reconstruction process (e.g., penalized-likelihood iterative reconstruction). These predictions are then used to identify projections views (i.e., points that will constitute the scan trajectory) that maximize task performance, beginning with the projection view that maximizes detectability, proceeding to the next-best view, and continuing in an (arbitrarily constrained) orbit that can be physically realized on advanced robotic C-arm platforms. The performance of CBCT reconstructions arising from a task-based trajectory is superior to simple and complex orbits by virtue of improved spatial resolution and noise characteristics (relative to the specified imaging task) associated with the projection views constituting the customized scan orbit.

A hybrid CT dataset is obtained from a combination of a integrating detector and a photon-counting detector. The hybrid CT dataset contains low-resolution photon-counting data and high-resolution integrating data. High-resolution panchromatic images are generated from the high-resolution integrating data, and low-resolution spectral images are generated from the low-resolution photon-counting data. The high-resolution panchromatic images inherit the resolution properties of the integrating detector while the low-resolution spectral images inherit the spectral information of the photon-counting detector. Subsequently, the low resolution spectral images are pansharpened based upon at least one high resolution panchromatic image that lacks spectral information according to a pansharpening algorithm.

The embodiment of the invention discloses a low-cost wide-angle high-definition optical system, which at least comprises a first lens, a second lens, a third lens, and a fourth lens in order from the object plane to the image plane along the optical axis, wherein the object plane side of the first lens is a plane, the image plane side of the first lens is a concave surface, and the focal power is negative; the object plane side of the second lens is a convex surface, the image plane side of the second lens is a convex surface, and the focal power is positive; the object plane side of the third lens is a plane, the image plane side of the third lens is a convex surface, and the focal power is positive; the object plane side of the fourth lens is a concave surface, the image plane side of the fourth lens is a convex surface, and the focal power is negative. The embodiment of the invention also provides a lens. The low-cost wide-angle high-definition optical system provided by the embodiment of the invention is applied to smart home and other occasions requiring day and night monitoring, and mainly comprises four lenses, the number of lenses is few, the structure is simple, and the cost is greatly reduced compared with the same specification of product. The optical system has good optical properties such as wide angle, large aperture and day and night confocus, a good temperature imaging effect, and an excellent 2M pixel resolution property.

The invention discloses an aqueous-phase demulsifier and a preparation method thereof. The aqueous-phase demulsifier comprises a solvent consisting of an optional combination of water, methanol, ethanol and dimethylbenzene at an optional mass ratio and a solute consisting of long-chain alkyl 1.0 G polyamide-imide and long-chain alkyl benzene sulfonic acid at optional mass ratio. The preparation method comprises the following step of uniformly mixing long-chain alkyl 1.0 G polyamide-imide, long-chain alkyl benzene sulfonic acid and the solvent. The aqueous-phase demulsifier has an excellent interface participation capability and viscosity reduction function, can quickly reach an oil-water surface to replace a natural surface active substance so as to form a novel unstable oil-water interface film, has favorable phase inversion and emulsion resolution properties to W / O / W type complicated emulsions, and can be applied to the fields of dehydration of water complicated emulsions or treatment of highly-oily sewage, and an innovative technique for preparing the aqueous-phase demulsifier is also provided.

The utility model provides an encoding and decoding method based on the DCT resolution telescopic image, which is characterized in that, in the process of coding, an original image or video frequency frame is divided into (4xN)2x(4xN)2 macro blocks, the macro blocks are divided into (4xN)x(4xN) code blocks, the same frequency is arranged in a same restructuring encoding block to encode according to the PRI of the resolution property by using the frequency of the coefficient in the code blocks after DCT quantification, the corresponding position relations of the frequency in the blocks, and the resolution characteristic; in the process of decoding, the received restructuring encoding block is reverted to the DCT position in the original macro blocks, and the IDCT encoding block is selectedto recompose the resolution telescopic image according to the resolution grade of the current coding block. The encoding and decoding method has an advantage that the corresponding coding flow can betransmitted according to the different receiving ends, so the transmitting bandwidth is effectively saved, and the resolution telescopic coding and decoding code is agile than the DWT.

The invention provides a phenylacetylene derivative with an ester group on a lateral base band and preparation, polymerization and application methods. The invention provides a phenylacetylene derivative with an ester group, a spiral phenylacetylene derivative with an ester group on a lateral base band prepared from the phenylacetylene derivative, and a method for preparing a coating chiral stationary phase from the spiral phenylacetylene derivative. According to the methods, a series of novel optical activity phenylacetylene derivatives with ester groups are synthesized; homopolymerization is realized by virtue of a rhodium-based catalyst; a series of optical-activity spiral phenylacetylene derivatives with the ester groups on the lateral base bands are synthesized; and corresponding coating high-performance liquid chromatography chiral stationary phases are prepared. The high-performance liquid chromatography chiral stationary phases of the series of polymers have relatively good chiral recognition and resolution properties; and the coating phenylacetylene high-performance liquid chromatography chiral stationary phase has the characteristics of relatively high purity and high yield, short preparation cycle, simple process, low cost, and wide application prospect in the fields of chiral recognition resolution.