55results about How to "Discrimination speed is fast" patented technology

The invention provides an eggshell crack detection method for multi-station acoustic response signal analysis, comprising: performing tapping rod excitation at n different excitation positions on the surface of a single poultry egg, and collecting a single excitation of the tapping rod at each excitation position There are a total of n response sound signals, wherein n is an even number > 2; use the initial point selection method to determine the starting point of the signal effectively excited by the percussion stick in each original acquisition signal, and use the effective signal band selection method to intercept each signal from The starting point of the effective excitation signal of the percussion rod is the sound signal band generated by the first strike of the percussion rod on the surface of the eggshell; the cross-correlation coefficient between the signals of a single egg is obtained by using the method of multi-signal joint analysis Discriminate whether there are cracks on the surface of poultry eggs according to the average result of the cross-correlation coefficient, the present invention solves the problem of poor adaptability existing when the existing eggshell crack detection model is applied to poultry eggs of different varieties, and the accuracy of detection High, the detection speed is fast.

The invention discloses an automatic and rapid extraction method and device for newly added human activity plaques on the ocean red line, belonging to the field of environmental monitoring. In this method, the background vector is used to segment the background image and the image to be detected, and the segmented plaques are discriminated one by one by using the luminance statistical value and the spectral feature function to obtain the changed plaque and the suspected changed plaque; the suspected changed plaque and the local The patches corresponding to the bottom image are segmented twice according to the characteristics of spectrum, geometry, and texture, and the segmented patches are identified one by one by using the luminance statistical value and the spectral feature function to obtain the changed patches; all the changed patches are combined to obtain a new Increase the number of human activity patches; make statistics on the newly added human activity patches, and obtain the number and area of ​​the newly added human activity patches within the ocean red line. The invention can automatically and quickly extract information such as the position, quantity and distribution area of ​​newly added human activity patches in the ocean red line, and provide fast and accurate technical support for the supervision of human activities on the ocean red line.