Gradient Mapping poster image

Quick answer：

Gradient mapping is a technique used in image processing and graphic design to create a smooth transition between two or more colors. It is commonly used in creating visually appealing graphics and is often applied to posters, backgrounds, and other visual elements to add depth and visual interest. In the context of a poster image, gradient mapping would involve creating a seamless blend of colors across the image, which can enhance the overall aesthetic appeal and convey a specific mood or theme.