225results about How to "Solve the slow test speed" patented technology

The invention publishes a method for detecting video action, and relates to the technical field of computer vision recognition. The video action detection method is based on a convolutional neural network, a space-time pyramid pooling layer is added to a network structure, restrictions of a network on input is eliminated, the speed of training and detection is improved, and the performance of video action classification and time positioning is improved; the convolutional neural network includes convolutional layers, common pooling layers, space-time pyramid pooling layers and full connection layers; and output of the convolutional neural network includes a category classification output layer and a time positioning calculation result output layer. According to the method provided by the invention, video clips of different time lengths do not need to be obtained through downsampling, but by direct one-time input of a whole video, thereby improving efficiency; and at the same time, since the network trains video clips of the same frequency, difference within a category is not increased, the learning burden of the network is reduced, model convergence is relatively fast, and a detection effect is relatively good.

The invention relates to a method and a device for executing the method for spatial presentation of a predeterminable area under examination. By overlaying a movement of the axis of projection along an axis of examination onto a rotation of an axis of projection around the object under examination, and by interpolating from the recorded projection data sets image data sets for axes of projection not recorded, and by creating a spatial presentation of the area under examination from the projection and image data sets, a method and a device can be provided which increases the speed of an examination for an extended area under examination of an object under examination.