Gouraudvarjostus

Gouraud shading, also known as Gouraud interpolation or Gouraud shading, is a computer graphics technique used to create smooth color transitions across the surfaces of 3D models. It was developed by Henri Gouraud in 1971 and is widely used in real-time rendering to simulate the effects of lighting and shading on 3D objects. The technique involves calculating the color of each vertex of a polygon based on the lighting conditions at that point and then interpolating the colors across the surface of the polygon to create a smooth gradient. This process helps to create the illusion of a continuous surface with varying shades, enhancing the realism of the rendered image. Gouraud shading is particularly effective for rendering curved surfaces and objects with complex lighting interactions. It is less computationally intensive than other shading techniques, such as Phong shading, making it suitable for real-time applications. However, it can sometimes result in visual artifacts, such as Mach bands, where the color transitions are not smooth enough. Despite these limitations, Gouraud shading remains a fundamental technique in computer graphics and is widely used in various applications, including video games, virtual reality, and 3D modeling software.