On Thu, 2007-02-01 at 11:06 +0000, Anne Wilson wrote: > In the thread "webcam support/hardware compatibility list" Riick Sewell wrote > > The person at http://mxhaard.free.fr/ was very helpful in getting the > webcam to sort of work. Unfortunately, my knowledge of webcams and > color was so limited I could only help him to a point, and he had to > wait for more knowledgeable people to get this webcam to get the colors > even close to being correct. > > Rick, can you give us some idea of what you had to do? It may give us a clue > for troubleshooting our own colour problems. > I wish I could give a good answer to this question. The person at http://mxhaard.free.fr had a way to dump registers, from the webcam. I sent him a message, with these registers. We were lucky when he made a guess the webcam chip set was similar to a chip set the driver supported. He sent me an updated driver, he thought might be able to get an image. I compiled the driver, from him, and ran a tool, he had on his website, that showed what was being seen from the webcam. The tool could take a picture. I would take a picture and send the picture to him. He would look at the picture and tell me what lines to change in the driver. I would change those lines, take another picture, and send him the picture. We would repeat the process as far as we were able. He was able to get a picture. The colors in the picture were poor. What he needed was a person who understood more about cameras and lighting and color--all things I did not know. I was a pair of hands. I got lost when he tried to explain the different color things--YUV, parameters to try for red, green, blue, gamma. I am not a camera buff. He was very patient with me.
