Difference between revisions of "Talk:Converting microarray images"
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Hi Sven, was just wondering why you are converting tiff to jpeg? Jpeg is going to introduce a lot of artifacting and I imagine this would have a very bad affect on your results. If your source is TIFF consider using the LZW compression with binary encoding to save space and then translate this directly into PNG with imagemagick. In this way the only loss will be the pixel colour rounding error introduced with the conversion from 16bpp to 8bpp. This is still a lot of error though. | Hi Sven, was just wondering why you are converting tiff to jpeg? Jpeg is going to introduce a lot of artifacting and I imagine this would have a very bad affect on your results. If your source is TIFF consider using the LZW compression with binary encoding to save space and then translate this directly into PNG with imagemagick. In this way the only loss will be the pixel colour rounding error introduced with the conversion from 16bpp to 8bpp. This is still a lot of error though. | ||
| − | Check this: [wikipedia:png]]. It looks like the PNG format supports 48bit colour spaces, so you could keep the whole 16bits per pixel in the conversion to PNG and not have to discard any data. --[[User:Rob|Rob]] 12:48, 14 Sep 2006 (NZST) | + | Check this: [[wikipedia:png]]. It looks like the PNG format supports 48bit colour spaces, so you could keep the whole 16bits per pixel in the conversion to PNG and not have to discard any data. --[[User:Rob|Rob]] 12:48, 14 Sep 2006 (NZST) |
Revision as of 00:49, 14 September 2006
Hi Sven, was just wondering why you are converting tiff to jpeg? Jpeg is going to introduce a lot of artifacting and I imagine this would have a very bad affect on your results. If your source is TIFF consider using the LZW compression with binary encoding to save space and then translate this directly into PNG with imagemagick. In this way the only loss will be the pixel colour rounding error introduced with the conversion from 16bpp to 8bpp. This is still a lot of error though.
Check this: wikipedia:png. It looks like the PNG format supports 48bit colour spaces, so you could keep the whole 16bits per pixel in the conversion to PNG and not have to discard any data. --Rob 12:48, 14 Sep 2006 (NZST)
