What is tone mapping?
tone mapping is a process that is a picture, usually a photo, modified so that it does not get a high range of tones in the medium, which is not necessarily designed to handle them. This process includes an understanding of two basic concepts: which are images with a high dynamic range (HDR) and low -dynamic (LDR) images. HDR images have a big difference between low and high tones, darkness and lights, while LDR images have a much smaller range between tones. A photographer or a photo manipulator can use tones mapping to change the data in the HDR image to better display on the monitor or other medium that is in nature LDR. The HDR image or a high dynamic range has a wide range of tones that are of lightness and darkness. This means that someone who sees a picture of HDR can see a huge difference between the lightest tones of the darkest tones of color, so in this type of image there may be quite a dramatic range of "blues" or "red" in this type of image.
On the other hand, the LDR image or a low dynamic range has less resolution between different tones. Someone who sees the image of LDR might notice that the lightest and darkest tones of one color resemble each other more than in the HDR image. Many digital cameras can capture HDR images, but computer monitors can usually display only LDR images. This means that someone watching a sharp and powerful photo on a computer monitor could consider it boring and missing in a tonal range. The brightest and darkest colors of the original HDR are effectively lost in the LDR medium, which retains only the mean range and "cuts" higher and lower tones.
tones, however, allows someone to manipulate the photo image, so the tones available in the HDR are properly displayed through the LDR context. This is usually achieved by creating three or more photos, rather than just one picture. Each of these pictures is captured atvarious exhibitions, which changes the time when the camera accepted light. This creates a number of pictures that are basically the same, but with a wide range of tones, lights and darkness, captured in each picture.
The photographer can then use tones mapping to basically combine these different images into one final picture. This creates a resulting image that can be displayed on LDR media, such as a computer monitor, but has a brightness and range of HDR image tones. Using tones mapping, the artist can create a final photo that captures the range of tones that would otherwise be lost directly between two formats.