32results about How to "Guaranteed modeling accuracy" patented technology

The invention provides a power amplifier behavior modeling method based on two-stage open-loop and binary function, which relates to the technical field of nonlinear system modeling and analysis applications. The modeling of nonlinear power amplifiers with memory effect can be completed with fewer parameters and no feedback path, and it provides good modeling accuracy for in-band distortion and spectrum regeneration. By improving the modeling accuracy of power amplifiers, the Reduce the interference of nonlinear noise in the system containing the power amplifier circuit to the system.

The invention discloses a storage battery modeling method based on correlation and regression analysis. A two-order RC equivalent circuit model is adopted as a battery model, correlation and regression analysis is performed on the slow dynamic characteristic of a battery, and whether the battery model is simplified or not is judged according to the analysis result. With the adoption of the two-order RC model established with the method, calculation burden caused by a high-order RC link can be reduced while the high accuracy is kept.

A multicolor printing system splitting modeling method for maximizing a color gamut comprises steps of manufacturing and printing single color step-wedges of all primary colors, determining the ultralimit threshold value of each single color ink quantity, measuring the spectrum value of each single-color step-wedge subjected to equal ratio compression and establishing a corresponding relation; splitting an original multicolor printing system into printing system submodels; performing ink color space overall sampling to obtain the sampling samples under the sprinting system submodels, and obtaining the prediction spectrum reflectivity information values by simulation; targeting at all submodels, using a convex hull algorithm to calculate to obtain the ink color space overall sampling color gamut volumes; combining K submodels and using the convex hull algorithm to obtain the color gamut volume of each combination, and locking the combination corresponding to the maximum color gamut coverage rate when the maximum color gamut coverage rate is larger than the preset threshold value, thus realizing the splitting modeling of the original printing system. The method has the technical advantages of obviously reducing the splitting modeling complexity of the system, avoiding the ink quantity ultralimit problem, improving the stability of output colors and the like.

The invention discloses a three-dimensional face modeling method and system assisted by face geometric information. The method is based on the principle of binocular stereo vision of active projection, and uses phase information contained in a multi-frame striped structured light field to perform a modeling operation on a target face surface. Mark, use the camera to obtain the modeling image, obtain the relative phase information contained in the striped structured light field based on the spatial phase unwrapping technology, and use the facial feature points as the anchor points to unify the relative phase information of the binocular camera to the same benchmark, Then phase matching is performed to obtain the disparity map, and then the 3D face model is reconstructed. This method makes full use of the position information of the facial feature points contained in the face fringe map, and performs phase unwrapping without adding an additional structured light field, effectively reducing the number of projections and shooting structured light fields required to complete the three-dimensional modeling, shortening the Modeling image acquisition time, and effectively ensure the modeling accuracy.