color image in the original picture

Quick answer：

Color images in photography and digital media refer to images that contain a full range of colors, typically represented by a color spectrum from black to white. These images are created by recording the intensity of light in each of the three primary colors (red, green, and blue) at each pixel in the image. This allows for a wide range of colors to be displayed, making color images more visually appealing and realistic compared to black and white images. In digital photography, color images are captured using color sensors or cameras that can detect and record the color information. The color information can be processed and adjusted during post-processing to enhance the image's appearance.