What does resolution refer to in the context of images?

Resolution in the context of images primarily refers to the clarity and sharpness of an image. This is determined by the amount of detail an image holds, which is often quantified by the number of pixels present in a given area, typically measured in pixels per inch (PPI) or dots per inch (DPI). A higher resolution means that the image contains more information and can therefore display finer details, sharp edges, and smoother transitions between colors. This can significantly enhance the visual experience, especially when images are displayed on larger screens or printed.

While other concepts like aspect ratio (the dimensions of the image), color depth (the number of colors an image can represent), and processing speed (how quickly a device can render the image) are important aspects of image quality and functionality, they do not directly define the resolution. Resolution specifically highlights the level of detail and clarity in an image, making it a key concept in photography, digital media, and graphic design.