35results about How to "Fast and accurate generation" patented technology

A camera-based automated precision road map generation system according to one embodiment is disclosed in the present document. An object recognition unit recognizes a road facility object including at least one of a GCP object and a general object and an attribute in units of frames of the road image; a feature point extraction unit extracts feature points of at least one or more road facility objects from the road image; a feature point tracking unit matches and tracks the feature points in successive frames of the road image; a coordinate determination unit acquires the relative space coordinates of the feature points so as to minimize the difference between the camera attitude information predicted from the tracked feature points and the calculated camera attitude information; when the GCP object is recognized, the correction unit corrects the target space coordinates of the feature point on the basis of the coordinate point of the GCP object, the absolute space coordinates of which are known, so as to acquire the absolute space coordinates of the feature point.

A method for full-text retrieval of a corpus based on fingerprints, comprising: adopting a parallel method, constructing fingerprints for documents to be checked based on a distance graph method, and generating a fingerprint index; One or more fingerprints with the largest fingerprint similarity of the document are retrieved; the document corresponding to the fingerprint is the retrieval result for the document to be checked. The technical solution provided by the present invention establishes a fingerprint index based on a distance map, uses bit-by-bit "AND" operation to calculate the similarity of fingerprints, and uses a parallel method for retrieval, which can accurately and comprehensively describe the structure and content of documents, and improves full-text retrieval Efficiency and accuracy, low requirements for computer hardware, strong applicability, and easy promotion.

The present application provides a method, device, device and computer-readable storage medium for configuring a multi-mode constraint rule. The method includes: acquiring a configuration instruction, and entering a rule configuration page based on the configuration instruction; acquiring a control to be selected in a menu column of a rule module The selection instruction, based on the selection instruction, in the composite mode flowchart in the constraint rule display area, the selected rule modules are displayed in the first way, the unselected rule modules are displayed in the second way, and the selected rule modules are displayed in the second mode, and the selected rule modules are displayed in the second mode. The configuration completion instruction of the specified rule module, according to the configuration completion instruction and the selected rule module, the audit flow chart of the currently configured target mode is displayed in the constraint rule display area; according to the audit flow chart of the target mode, the received historical detection data Perform processing, and verify the audit process of the target mode according to the processing result; obtain the audit constraint rules of the target mode according to the audit flow chart of the qualified target mode.

The invention discloses a method for accurately calculating morphology change of a gully head and a gully wall of a gully with a washing hole. The method comprises the following steps of: firstly, importing the determined gully terrain grid data into GIS (Geographic Information System) software and setting a coordinate projection system; secondly, cutting the terrain data of the gully into three parts according to a water collecting area, a gully wall and a gully bed boundary; importing terrain data of the gully wall into a file which can execute data operation and respectively rotating spatial coordinates around a Z axis and an X axis according to the certain angle; secondarily importing the rotated gully wall data into the GIS software and extracting a boundary point position of the gully wall in a GIS software environment to generate a face file; then generating TIN (Triangulated Irregular Network) by using the rotated space point position and the boundary file; converting the TIN into a DEM (Digital Elevation Model) with proper size of grids; and subtracting the DEMs at different stages to finally obtain the terrain change processes of different stages. The method disclosed by the invention can be used for generating the DEM accurately and quickly, is simple in operation and does not need complex three-dimensional space conversion operation.

The invention discloses a high-level comprehensive dispatching method based on a linear delaying model. The high-level comprehensive dispatching method comprises: after acquiring input circuit description, constructing a control data flow diagram; clustering operation calculation in the control data flow diagram and establishing a corresponding delaying model for each type of operation calculation; carrying out delay estimation on the operation calculation based on the delaying model; calculating delaying information of any data path in the control data flow diagram; marking the calculated delaying information into the control data flow diagram, and constructing a dispatching diagram according to the control data flow diagram with the delaying information; and dispatching the dispatching diagram by adopting a difference constrained system dispatching algorithm to obtain a dispatching result. According to the high-level comprehensive dispatching method based on the linear delaying model, disclosed by the invention, the accuracy of the estimation is guaranteed by using the linear delaying model, and algorithm time complexity, namely polynomial time complexity, is reduced; a target function can be rapidly and accurately solved to obtain an accurate result, so that the whole dispatching result is more superior, and furthermore, a hardware circuit structure can be more rapidly and accurately generated.