41 results about "Structure comparison" patented technology

The invention discloses an automatic teller machine user face visibility judging system and method. The system comprises a camera installed above a screen of an automatic teller machine and used for taking pictures of human faces outwards, a camera installed on the top of the automatic teller machine and used for taking pictures of an entrance of the automatic teller machine downwards, an analyzing module installed in a shell body of the automatic teller machine, and a monitoring center connected with the analyzing module through the network. According to the method, the fact whether the automatic teller machine is used by a person is judged by means of image outline structure comparison and pixel region comparison; when the fact that the automatic teller machine is used by a person is confirmed, the face and facial organs of the person are detected by a cascading AdaBoost detector in the area of another path of video center; the fact whether the face of the person is blocked is judged by means of an eye classifier and a mouth classifier which are based on a Gaussian kernel support vector machine (SVM); the result in a time window is analyzed to obtain a result; the analyzing module transmits the result to the monitoring center through a private network or a wide area network for timely warning and recording and archiving.

When verifying rapidly the equivalence between source codes with respect to refactoring, the present invention performs two types of verification: verification based on structural comparison using structure graphs obtained by analyzing the source codes, and verification based on symbolic execution. If the structural comparison using the structure graphs can verify that the structures are identical with each other, then symbolic execution is not performed. Further, before the verification based on the structural comparison, the structure graphs of the source codes before and after refactoring are normalized on the basis of normalization information, which is defined for each refactoring pattern, and thereby adjusted so that the resulting structures are identical with each other when the refactoring is valid. Further, the structure graphs before and after the refactoring are subjected to abstraction before being subjected to symbolic execution for verification, thereby limiting locations to which symbolic execution is to be applied.

When verifying rapidly the equivalence between source codes with respect to refactoring, the present invention performs two types of verification: verification based on structural comparison using structure graphs obtained by analyzing the source codes, and verification based on symbolic execution. If the structural comparison using the structure graphs can verify that the structures are identical with each other, then symbolic execution is not performed. Further, before the verification based on the structural comparison, the structure graphs of the source codes before and after refactoring are normalized on the basis of normalization information, which is defined for each refactoring pattern, and thereby adjusted so that the resulting structures are identical with each other when the refactoring is valid. Further, the structure graphs before and after the refactoring are subjected to abstraction before being subjected to symbolic execution for verification, thereby limiting locations to which symbolic execution is to be applied.

The invention discloses an image feature matching method used for image retrieval, and belongs to the technical field of computers. By using the image feature matching method, an image is described from different types of four features including an image direction distribution feature, an image length distribution feature, image internal structure comparison feature distribution statistics and animage four-block gray feature; and finally image feature matching is performed by using a 7-dimensional eigenvector expression image feature. An algorithm solves the problems of large calculation amount, low efficiency and low accuracy of image matching in the prior art, greatly improves the image retrieval speed and performance, makes up for the limitation of a single feature, and can improve thematching accuracy.

The invention discloses a positioning placement device suitable for columnar and spherical parts. The positioning placement device comprises a baseplate frame, wherein foundation bolts are mounted at four corners of the baseplate frame in a penetrating manner; a group of rotating shafts are welded on the baseplate frame; the rotating shafts are in running fit with rotary bases; a group of bolt shafts are mounted at the outer edge of each rotary base in a penetrating manner and are in running fit with rollers; the rollers are in contact with the baseplate frame; an upright is welded with the upper part of each rotary base; a top frame is welded at the top of each upright; pin shaft rack are welded in two side positions of each top frame; the pin shaft racks are matched with rotating rollers through pin shafts; the rotating rollers are in running fit with the corresponding pin shafts; and a rotating shaft groove is formed in the bottom center of the each rotary base. The positioning placement device suitable for the columnar and spherical parts is simple in structure, low in production cost and reliable in positioning with the ground, can be used in group, meets the placement demands of the columnar parts, the spherical parts, and parts with conical faces, and satisfies the requirement for rotating the parts during detection.

The embodiment of the invention provides a paper quality detection method, device and equipment. The method comprises the following steps: acquiring document data of a paper; if the extension name of the document data accords with a preset extension name format, comparing a document structure of the paper with a document structure in a preset template, and recording a structure comparison result; otherwise, the format of the output document data is abnormal; identifying a program code block in the document data, and recording a code block identification result; identifying hidden characters and / or special characters in the document data, and recording an abnormal character identification result; comparing format information in the document data with a format specified in a preset template, and recording a format comparison result; grammar errors and character errors in the document data are recognized, and wrong character recognition results are recorded. In this way, multi-dimensional detection can be carried out on the quality of the thesis, the thesis quality defects can be obtained more detailedly and accurately, and data support is provided for overall quality evaluation of the thesis.

The invention provides a backing preventing lock body mechanism and a touch type door lock and mainly solves the problem that most of the structures of the existing door lock backing preventing mechanisms are complicated. The touch type door lock is characterized in that a lock shell comprises an inner cavity and an opening which communicate with each other; a lock tongue is arranged in the innercavity and linearly moves for unlocking or locking, and when the lock tongue is located at a locking position, the front end of the lock tongue extends out of the opening and is exposed out of the lock shell; a blocking component comprises a first position at which the blocking component is driven by a rotating core to carry out blocking fit with the lock tongue when the lock tongue is at the locking position and a second position at which the blocking component moves away from the motion path of the lock tongue; and an elastic resetting component is used for pushing the rotating core and driving the blocking component to move towards the second position. According to the lock body mechanism and the touch type door lock, provided by the invention, the backing of the lock tongue is prevented through the motion of the blocking component, the structure is simple, and the use is convenient; and moreover, the touch type door lock provided with the mechanism is further provided, unlocking can be carried out through press rather than rotating, the structure is compact, and the demand on door opening space is low.

The invention discloses a resonance-peak-free vibration isolator of an L-shaped resistance arm, and a damping module of the resonance-peak-free vibration isolator. The resonance-peak-free vibration isolator consists of a vibration damping module, the damping module and a connection module, wherein the vibration damping module comprises a hollow internal thread hexagon bolt, an internal thread sleeve and a main spring; the damping module comprises a waist-drum-shaped damping sleeve, a first L-shaped damper, a second L-shaped damper and a damping module buffering spring; and the connection module comprises an upper end cap, a fastening pressure plate, a lower cover cap with a cylindrical bulge, and a base. The damping module disclosed by the invention is simple in implementation structure. When the vibration isolator vertically vibrates, the two L-shaped dampers in the damping module are respectively in contact with two concave ports, so that stable damping force in vertical and horizontal directions can be provided, good centering and resetting effects on transverse vibration can be realized, and the resonance inhibiting effect is good. The damping module disclosed by the invention is simple in implementation structure, and has a good inhibiting effect on transverse resonance and longitudinal resonance.

A multi-domain protein structure assembly method based on residue contacts between domains, starting from the three-dimensional structure of each domain, using a structure comparison tool to score all multi-domain protein templates in the protein library, and select the template with the highest score for Assembly; an initial structure is then generated from the template, and a small region is randomly selected for rigid-body rotation and translation, resulting in a new full-length structure; secondly, the assembly is evaluated in terms of inter-domain residue contacts, template and inter-domain atomic conflict energies The quality of the structure, and accept the assembled structure according to the Monte Carlo criterion; finally, the structure with the lowest energy among the structures assembled by all templates is selected as the final structure. The invention provides a multi-domain protein structure assembly method based on inter-domain residue contacts with high prediction accuracy.

The invention discloses a small soil stirring device which is easy to clean, comprising a strip-shaped support frame, a stirring and cleaning mechanism is provided on the upper surface of the strip-shaped support frame, and a limiting support mechanism is provided on the lower surface of the strip-shaped support frame. The beneficial effect of the present invention is that it is a device that is more convenient to use, has a relatively simple structure, and is more uniform in stirring, and is also convenient for more effective cleaning of the stirring tool after stirring, reduces labor intensity, has good sealing contact with the ground, and is relatively convenient to carry .

The invention discloses a medicine for preventing and curing restenosis and a preparation method and a using method thereof. The effective components of the medicine include guaianese squiterpenes compounds P1, P2 and P3, wherein P1 is Zedoalactone B; P2 is a stereoisomer of P1; P3 is Zedoarondiol; and the effective components are extracted from Curcum lump powder by water bath, ultrafiltration separation, nanofiltration concentration, chromatographic purity analysis and nuclear magnetic resonance structure comparison. The using method of the medicine is to coat a carrying device with the medicine taking the compounds P1, P2 and P3 as the effective components. The medicine can prevent and cure restenosis, and compared with a conventional sirolimus-eluting stent, the medicine can inhibit the proliferation of vascular smooth muscle cells and inflammatory responses of vascular walls. Besides, the medicine can promote healing of vascular endothelial cells, avoids long-term thrombotic complications; and the dose is low, the cost is low and toxic or side effects are avoided.

The invention provides a printed circuit board homogenization determination method and device. The method comprises the steps of obtaining PCB images of multiple PCBs; partitioning the PCB image intoblocks; acquiring RGB histogram, brightness, contrast and structure comparison information of the block; calculating a mean value, a variance and a covariance of the RGB histogram, the brightness, thecontrast ratio and the structure comparison information of the PCB image; marking a specified module in the PCB image, and recording position information of the specified module; for the PCB images with the same specified module, calculating the first similarity of every two PCB images; calculating the second similarity of the PCB images in pairs by using the position information of the specifiedmodule; and when it is determined that the first similarity is greater than a first preset threshold and the second similarity is greater than a second preset threshold, determining that the PCBs corresponding to the two PCB images are homogeneous products. The method can improve the efficiency and accuracy of identification and homogenization under the condition of low cost.