Hi!
Can anyone explain/share information with me about how HDR processing works from algorithmic point of view. I have several ideas and want to write a program, which will do a thing like this, that is why I'm asking. Most of all I'm interesting in making HDR-like picture from the SINGLE image (not different shots with different exposures). As I understand this should be done using digital reexposure and then - standard combination of images as is "traditional" HDR. So, if you please I'll outline three main areas of my interest now:
1) The approach to digital reexposure. How this could be done. Formulas or verbal description will be great.
2) The approach to tone mapping. I have implemented tone compression, but the main question is how to determine the degree of compression and colors to compress (I do not think I should compress all the colors constantly).
3) The general idea of combing image for HDR. What I do now is trying to get more details for dark areas from darker image and more details for light areas from lighter image. As a result I'm getting a bit smoke-coloured picture, so, I can imagine, I'm doing something wrong
I'll be very thankful of any: several recommendations, brief description, detailed explanation or a reference to paper/resource, which discusses, what I need. Sure, someone have experimented with the thing like this. Help me please. I hope, the game is worth candles
Can anyone explain/share information with me about how HDR processing works from algorithmic point of view. I have several ideas and want to write a program, which will do a thing like this, that is why I'm asking. Most of all I'm interesting in making HDR-like picture from the SINGLE image (not different shots with different exposures). As I understand this should be done using digital reexposure and then - standard combination of images as is "traditional" HDR. So, if you please I'll outline three main areas of my interest now:
1) The approach to digital reexposure. How this could be done. Formulas or verbal description will be great.
2) The approach to tone mapping. I have implemented tone compression, but the main question is how to determine the degree of compression and colors to compress (I do not think I should compress all the colors constantly).
3) The general idea of combing image for HDR. What I do now is trying to get more details for dark areas from darker image and more details for light areas from lighter image. As a result I'm getting a bit smoke-coloured picture, so, I can imagine, I'm doing something wrong
I'll be very thankful of any: several recommendations, brief description, detailed explanation or a reference to paper/resource, which discusses, what I need. Sure, someone have experimented with the thing like this. Help me please. I hope, the game is worth candles