Please select the most similar patent number from A, B, C and D. Which number is?
A method for the voice driving a lip&#39;s shape in a cartoon to be changed, and a method and device for obtaining a cartoon of the lip are disclosed by the invention, which belong to the computer field. The method for the voice driving the lip&#39;s shape in the cartoon to be changed includes: obtaining an audio signal, and obtaining the motion amplitude scale of the lip&#39;s shape according to the characters of the audio signal; obtaining the original model of the lip&#39;s shape, and generating the motion amplitude value of the lip&#39;s shape according to the original model of the lip&#39;s shape and the motion amplitude scale of the lip&#39;s shape; generating a set of gridding model of the changing lip&#39;s shape according to the motion amplitude value of the lip&#39;s shape and a pre-established lip pronouncing model database. The device for the voice driving the lip&#39;s shape in the cartoon to be changed includes: an obtaining module, a first generating module and a second generating module. A method and device for obtaining the cartoon of the lip are also provided by the invention. The provided technical solution by the invention is simple in algorithm and less cost.
A: Provided in the present disclosure are a video conference control method and system, and a mobile terminal and a storage medium. The method comprises: performing image collection on a video conference attendee to obtain an attendee image, and performing facial recognition on the attendee image to obtain an attendee tag; according to the attendee tag, performing tag marking on the attendee image, performing image display on the attendee image which has been subjected to tag marking, and performing lip action detection on the attendee image; and if any attendee image satisfies a preset lip action condition, setting the video conference attendee corresponding to the attendee image to be a conference speaker, and magnifying, in the attendee image, an image corresponding to the conference speaker. By means of the present disclosure, if any attendee image satisfies a preset lip action condition, a video conference attendee corresponding to the attendee image is set as a conference speaker, and an image corresponding to the conference speaker is magnified in the attendee image, such that other video conference attendees can intuitively see the conference speaker of the current video conference, thereby improving the video conference experience of users.
B: A mouth shape generation method and apparatus, and an electronic device, relating to the technical field of data processing. The method comprises: obtaining the sampling frequency of an audio file and the frame frequency of a video file corresponding to the audio file, the video file including a mouth shape animation (S101); determining an audio vector of the audio file on the basis of the sampling frequency and the frame rate (S102); predicting, by means of a prediction model, a mouth shape coefficient corresponding to the audio vector to obtain a mouth shape prediction value (S103); constructing a minimization objective function on the basis of an actual mouth shape value extracted from the video mouth shape animation and the mouth shape prediction value, the minimization objective function being used for training the prediction model so that the prediction accuracy of the prediction model reaches a preset value (S104); and performing mouth shape prediction on a newly obtained audio file on the basis of the trained prediction model (S105). By means of the method, the accuracy of picture mouth shape synthesis is improved.
C: A holographic projection system (10) for real-time interactive animation, the system comprising: a motion capturing module (11), comprising at least four image acquisition units (111) and used to capture motion data of an object from at least four angles; an image processing module (12) used to receive and process the motion data in real-time to generate motion drive data, and to drive, according to the motion drive data, rendering of a virtual object to generate. in real-time, animation image data; and a holographic projection module (13) used to project and display the animation image data on a holographic apparatus (131). The present invention further provides a holographic projection method for real-time interactive animation, and artificial intelligence robot (100) employing the holographic projection system (10) and method for real-time interactive animation.
D: The present application relates to artificial intelligence, and provides a voice activity detection method and apparatus, and a device and a computer-readable storage medium. The method comprises: obtaining an audio signal to be detected, and video data and a reflected wave signal collected during collection of the audio signal; determining frequency spectrum data of the audio signal, and determining a frequency spectrum feature vector of the audio signal according to the frequency spectrum data; extracting image areas where a lip part in the video data is located, and determining a video feature vector of the video data according to each image area; determining a phase difference between the reflected wave signal and a preset transmitted wave signal, and determining a reflected wave vector of the reflected wave signal according to the phase difference; fusing the frequency spectrum feature vector, the video feature vector, and the reflected wave vector to obtain a target feature vector; and inputting the target feature vector into a pre-trained voice activity detection model to obtain a plurality of voice activities of the audio signal. The present application can improve the accuracy of voice activity detection.
Answer: B