31results about How to "Improve classification rate" patented technology

The invention discloses an undesirable image detecting method based on connotative theme analysis, which is substantially used for solving the problem of wrong judgment on normal images resulting from semantic information consideration failure in the present undesirable information detecting method. The scheme is as follows: extracting a skin region of an image by a double-blending Gaussian model; generating a codebook base containing distinguishing features in the skin region by a word bag model, and representing each training image to a group of word co-occurrence vectors with weights via aword frequency-inverse identification file frequency method; forming all co-occurrence vectors to a co-occurrence matrix, performing LDA model creation on the co-occurrence matrix to obtain the themeof the image; inputting the mixed theme of the training image in a BP neural network to train an undesirable image classifier; and obtaining the theme of an image to be measured, inputting the theme to the undesirable image classifier, and judging whether the theme is an undesirable image so as to finish the undesirable image detection. As shown in the test, the invention can be used for better distinguish the undesirable images and the normal images, so that the invention can be used for filtering the erotic information in the images.

The invention discloses a method for quickly classifying seismic waveforms based on a semi-supervised algorithm, comprising the following steps: S1, obtaining seismic waveform data along horizons, and adopting an SSDR algorithm based on linear transformation to reduce the dimensionality of seismic waveform data; S2, using seismic The label data in the waveform data trains a distance measurement matrix; S3, using the semi-supervised Kmeans classification algorithm to classify the seismic waveform data to generate a seismic phase map. The invention uses a semi-supervised dimension reduction method to process the original seismic waveform data, eliminates redundant data, increases the similarity of the same type of waveform data, and enhances the differences of different types, making the classification results more accurate; using the existing A suitable distance measurement matrix is ​​trained from the well logging data, and the distance measurement method is introduced into the subsequent classification method, and then a weighted semi-supervised Kmeans classification method is proposed, which makes full use of the well logging data and improves the Classification accuracy, and speed up the classification rate.

The invention discloses a method for detection and classification of internal circular spline products in harmonic reducers. The method comprises the steps of (1) product detection, (2) channel product classification and (3) maintenance and overhauling. The invention provides a technical proposal related to the method for detection and classification of the internal circular spline products in theharmonic reducers. The overall structural design is rational; all-automation processing of product detection and classification is realized; manual labor strength is effectively reduced; safety performance of operations is improved; classification of the products is more accurate and convenient; the error rate of product classification is effectively reduced; the waste rate of resources is reduced; and data is transmitted to a control system in time during full-automatic classification, so ratio data of qualified and rejected products detected in classification can be updated in time and thusthe reject rate of the equipment production products can be controlled.

An apparatus and method for controlling a convergence of a projection television includes a pattern generator which generates R, G, and B video patterns used for controlling the convergence and then outputs the R, G, and B video patterns to a display, and a controller which compares position coordinates and luminance levels of the R, G, and B video patterns with position coordinates and luminance levels of reference R, G, and B video patterns to adjust the luminance levels of the R, G, and B video patterns to the luminance levels of the reference R, G, and B video patterns.

The invention discloses an automatic classification method for algae cell images. The automatic classification method includes the following steps: preprocessing the algae image, obtaining the processed algae image; and extracting the visual features of the algae image according to the processed algae image, Obtain the feature vector represented by multi-feature fusion; classify all algae cells according to category, and extract a specific proportion of cell images in each type of cell as a training set for subsequent model learning; construct and solve the objective function of the multi-task learning mode; use training The resulting model makes predictions on the test data. The invention reduces the computational complexity and improves the classification rate of algae cells.