Computer graphics, also known as computer-generated imagery (CGI), is a rapidly growing field in computer science that deals with generating visually appealing and interactive images and animations using computer software. It has become an essential element in various industries, such as entertainment, gaming, medicine, and architecture, to name a few. This article serves as an introduction to computer graphics in computer science, discussing its history, applications, and techniques.

History
Computer graphics has come a long way since its inception in 1947, where the first digital image was created using a cathode-ray tube. However, it was not until the 1970s when Ivan Sutherland introduced Sketchpad, the first computer-based graphics program, that computer graphics gained recognition as a field of study. Since then, computer graphics have evolved significantly, thanks to advancements in hardware and software technologies, giving birth to a variety of techniques and tools.

Applications
The applications of computer graphics are widespread and diverse, making it a fundamental aspect of many fields. In the entertainment industry, computer graphics are used to create stunning visual effects in movies, TV shows, and video games. In medicine, it aids in 3D medical imaging and simulation for surgeries. Architects use it to develop realistic representations of their designs, while engineers use it to create 3D models of products. Furthermore, computer graphics are utilized in education, scientific research, and virtual reality experiences, among others.

Techniques
Computer graphics use algorithms to create and manipulate images in a digital environment. One of the primary techniques used is raster graphics, where images are created and manipulated pixel by pixel. Vector graphics, on the other hand, use mathematical equations to create and edit images, making them suitable for creating crisp and scalable graphics. Another technique is rendering, where 3D images are generated from a 3D model and then shaded and textured to appear realistic. Computer graphics also rely on mathematical concepts such as linear algebra, geometry, and calculus.

Examples
To better understand computer graphics, let us look at some practical examples. In the entertainment industry, CGI is used to create breathtaking movie scenes, such as the dragons in Game of Thrones or the lifelike characters in The Lion King. In medicine, computer graphics aid in creating accurate and detailed visualizations of internal body structures, enabling doctors to better understand and diagnose illnesses. In architecture, 3D modeling using computer graphics allows architects to create realistic representations of their designs, providing clients with a better understanding of the final product.

In conclusion, computer graphics are an essential aspect of computer science, with a rich history, diverse applications, and various techniques. Its significance in various industries is evident, and its potential for future advancements is limitless. As technology continues to advance, we can only expect computer graphics to become even more integral in our everyday lives. With that said, learning and mastering computer graphics can open up a world of opportunities in the ever-growing field of computer science.