The document covers various methods in computer graphics focusing on hidden surfaces and line removal, including the z-buffer algorithm, Warnock's algorithm, and painter's algorithm. It also discusses curves and surfaces, highlighting Bezier and B-spline curves, followed by surface rendering methods like flat shading, Gouraud shading, and Phong shading. Each topic elaborates on techniques, advantages, and implementation strategies for creating realistic images in 3D graphics.