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253 results about "Low Confidence" patented technology

A response indicating a low level of confidence.

Character confidence degree-based secondary license plate identification method and apparatus

The invention relates to the field of double dynamic license plate identification, and provides a character confidence degree-based secondary license plate identification method and apparatus for the problems existent in the prior art. The method comprises the steps of performing character identification through template matching; giving out confidence degrees of identification results; for the results with relatively low confidence degrees, performing video super-resolution processing to obtain a frame of high-quality image; and based on the image, performing secondary license plate identification through a neural network classifier. According to the method and the apparatus, a license plate confidence degree threshold Th is preset; a picture is captured from a front end and license plate locating and segmenting are performed; characters of a license plate are identified; character identification confidence degrees and license plate identification confidence degree are calculated; when the character confidence degrees are all higher than the threshold Th, a license plate identification result is directly given, otherwise, the video super-resolution processing is performed; a frame of high-quality image is obtained by utilizing time domain information; and based on the image, the to-be-identified characters are input to classifiers for performing identification according to a position relationship of the to-be-identified characters, so that a final license plate identification result is obtained.
Owner:长信智控网络科技有限公司

Improved kernel-related filtering tracking method based on ultra-pixel optical flow and self-adaptive learning factor

The invention discloses an improved kernel-related filtering tracking method based on ultra-pixel optical flow and self-adaptive learning factor. The appearance reconstruction of target can be realized through ultra-pixel analysis, and the target is divided into ultra-pixel blocks which are clustered into an ultra-pixel center. The displacement change of the optical flow analysis pixel point of each ultra-pixel center is calculated, and the movement offset and scale change of the target can be detected. Based on the predicted parameter, cycled sampling is conducted on each new-frame image, andan improved and gauss kernel-based filtering target tracking method which introduces the self-adaptive learning factor is adopted by each sample, and the accurate position and scale of the target canbe detected. The detection result is detected and corrected through an on-line SVM detection model, and the position with low confidence is corrected, and finally the target position can be accurately positioned and the target accurate scale can be obtained. The invention is advantageous in that the tracking problems like scale change, shielding, deforming, and motion blur, which exit in the target tracking process can be overcome, and real-time and highly-precise target tracking can be realized.
Owner:GUANGZHOU GUANGDA INNOVATION TECH CO LTD

Method for sequencing polynucleotides

A method for obtaining a candidate nucleotide sequence S indicative of a sequence of a target polynucleotide molecule that produces a hybridization signal I({right arrow over (x)}) upon incubation with a polynucleotide {right arrow over (x)} for each polynucleotide {right arrow over (x)} in a set E of polynucleotides. For each polynucleotide {right arrow over (x)} in the set E of polynucleotides, a probability P0({right arrow over (x)}) of the hybridization signal I({right arrow over (x)}) when the sequence {right arrow over (x)} is not complementary to a subsequence of T and a probability P1({right arrow over (x)}) of the hybridization signal when the sequence {right arrow over (x)} is complementary to a subsequence of T are obtained; so as to obtain a probabilistic spectrum (PS) of T. A score is then assigned to each of a plurality of candidate nucleotide sequences that is being based upon the probabilistic spectrum and upon a reference nucleotide sequence H. A candidate nucleotide sequence having an essentially maximal score is selected and one or more low confidence intervals and one or more reliable intervals in the selected candidate nucleotide sequence are identified. For each low confidence interval detected in the selected candidate nucleotide sequence, a score is assigned to each of a plurality of candidate nucleotide sequences of the low confidence region, where the score is based upon a probabilistic spectrum obtained by filtering from the PS signals the signals present in the reliable regions; and upon an interval of the reference nucleotide sequence H homologous with the low confidence interval. A candidate nucleotide sequence having an essentially maximal score is then selected. A revised candidate sequence S′ is then obtained indicative of the sequence of the target polynucleotide molecule T by substituting the sequence of the low confidence region in the candidate sequence S with the selected candidate sequence.
Owner:RAMOT AT TEL AVIV UNIV LTD

Multi-characteristic multi-model pedestrian detection method

ActiveCN105913003ASolve the high rate of misjudgmentImprove detection rateBiometric pattern recognitionRgb imageOverlap ratio
The invention discloses a multi-characteristic multi-model pedestrian detection method, comprising steps of using an ICF+Adaboost classifier A to process a video frame RGB image, using a foreground-mask-based pedestrian detection classifier to process the foreground mask, combining results of the two classifiers, dividing the results into a high confidence level pedestrian detection result and a low confidence level pedestrian detection result according to a threshold value, using an ICF+Adaboost classifier B and a DPM pedestrian detection classifier to perform respective detection on the low confidence level pedestrian detection result, combining detection results of the two classifiers, using a detection score, an overlapping ratio, a width-height ratio, a classifier sequence number and a foreground ratio of each detected pedestrian as characteristic vectors, inputting the characteristic vectors into a ruling SVM to determine whether the detected pedestrian is correct pedestrian detection, outputting a new pedestrian detection result and combining the new pedestrian detection result and the high confidence level pedestrian detection result into a set as a final detection result. The multi-characteristic multi-model pedestrian detection method effectively solves the problem in the prior art that the misjudgment rate is high, and improves the detection rate.
Owner:STATE GRID CORP OF CHINA +2
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