In the field of 3D animation design and generation, the expression generation method of animation is not obvious due to the lack of image details, which leads to the lack of realism of the generated animation expressions. In order to solve this problem, a deep learning-based animation character expression generation method is proposed. The method, based on the real facial expression images, uses improved deep learning to design cascade classifiers, extracts facial expression feature images from real images, softens image edges, and enhances feature details. The content and style of images are unified, the loss function is designed from the content constraints and style constraints, the judgment network is optimized, and the feature information is fused under the constraints of the loss function to generate the facial expressions of animated characters. The experimental results show that the design based on the feature point location of the improved deep learning expression generation method is accurate, the Pearson correlation coefficient between the input image and the generated image is high, the root mean square error is small, and the realism of the generated facial expression is enhanced.

In today’s world, almost every domain has certain and mandatory requirements to understand at least one of the programming languages which is defined as a way of interaction with a computer to resolve real world problems or more specifically for the implementation of algorithms. Language programming is a course with strong theory and practice. In view of the fact that C language beginners in colleges and universities generally report that it is difficult to learn well due to various reasons. Therefore, in this paper, we have discussed the development and teaching of interactive virtual animation of C language programs. The proposed approach relies on a typical recursive algorithm case to analyze the teaching strategy of virtual algorithm animation brought into the classroom, the application in the algorithm teaching of C language and the teaching strategy in improving students’ understanding of abstract knowledge using computer C language program interactive virtual animation development and implementation of the teaching system is the research content. According to the basic flow of the interactive virtual algorithm of the C language program, a reasonable system structure design is carried out.