85 results about "Spherical model" patented technology

The invention relates to a method and an apparatus for displaying an image. The method comprises the following steps: acquiring an original deformed image; establishing a rectangular projection model which has same width-height proportion as a photographed picture; conducting anti-deformation processing on the rectangular projection model to obtain an abnormal projection model; based on the field angles in horizontal direction and vertical direction of a photographing camera, establishing a spherical model, bringing the abnormal projection model into inner connection to the spherical model, and spherical angles in corresponding directions constituted by the intersection points of the abnormal projection model and the spherical model in horizontal direction and vertical direction respectively becoming field angles in horizontal direction and vertical direction of the camera; emitting lines emit from the center of sphere being in connection to 4 edges of the abnormal projection model and obtaining the abnormal surface curtain by contouring the spherical surface of a spherical model; filling the abnormal surface curtain with the original deformed image to complete image rendering; displaying the rendered image. The method and the apparatus enable accurate and real-time displayed image.

The invention discloses a text classification method, which is used for realizing text classification, simplifying classification operation and improving the text classification accuracy. The method comprises the following steps of: segmenting the obtained text contents to obtain a plurality of words; determining a word vector of a word in a spherical space model for each word in the plurality of words, wherein the word vector of the word comprises a normalized word frequency value which is normalized by a word frequency value of the word on each category, the spherical space model is a multi-dimensional spherical model which takes unit length as a radius, the dimensionality of the spherical space is equal to the number of the categories, and the category corresponds to a category vector in the spherical space; determining a distance from the sum of the word vectors of the plurality of words to the category vector of the category for each category; and introducing the text into a category corresponding to the shortest distance. The invention also discloses a device for implementing the method.