JP4 HDR: Difference between revisions
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Considering that the accessible optics does not give the full permission of a sensor resolution, it can be used for increase in a dynamic range of a image sensor. | Considering that the accessible optics does not give the full permission of a sensor resolution, it can be used for increase in a dynamic range of a image sensor. | ||
{| border="0" cellpadding="2 | {| border="0" cellpadding="2" | ||
|- | |- | ||
| [[Image:Hdr02 all gain1.jpeg|thumb|150px nonHDR image with gain=1]] || [[Image:Hdr02 all gain16.jpeg|thumb|150px nonHDR image with gain=16]] || [[Image:Hdr02.jpeg|thumb|150px HDR source image with gained G2]] || [[Image:Hdr02 processed.jpg|thumb|150px processed HDR image]] | | [[Image:Hdr02 all gain1.jpeg|thumb|150px nonHDR image with global analog gain=1]] || [[Image:Hdr02 all gain16.jpeg|thumb|150px nonHDR image with global analog gain=16]] || [[Image:Hdr02.jpeg|thumb|150px HDR source image with gained G2]] || [[Image:Hdr02 processed.jpg|thumb|150px processed HDR image]] | ||
|- | |- | ||
|} | |} | ||
Matlab have interesting [http://www.mathworks.com/access/helpdesk/help/toolbox/images/makehdr.html possibility] for creating HDR from series of LDR images. | |||
We can easy make script for online & one click make HDR from series of images with different exposure times. | |||
=== Reference: === | |||
* [http://pfstools.sourceforge.net/index.html pfsTools] | |||
* [http://scanline.ca/exrtools exrTools] | |||
* [http://cvtool.sourceforge.net/index.html cvTool: GPU accelerated tools] | |||
* Tone Mapping [http://www.mpi-inf.mpg.de/resources/tmo algos]. With image/video samples. | |||
* [http://www.mpi-inf.mpg.de/resources/tmo/NewExperiment/TmoOverview.html Gallery of Reference Tone Mapped Images] | |||
---- | |||
* [http://www.stuckincustoms.com/ nice HDR blog] | |||
Latest revision as of 18:34, 3 May 2009
HDR JP4
Bayer pattern look like this
| R | G1 | R | G1 | R | G1 |
| G2 | B | G2 | B | G2 | B |
| R | G1 | R | G1 | R | G1 |
| G2 | B | G2 | B | G2 | B |
| R | G1 | R | G1 | R | G1 |
| G2 | B | G2 | B | G2 | B |
Some sensors have possibility to set independed scale to G1 and G2. Considering that the accessible optics does not give the full permission of a sensor resolution, it can be used for increase in a dynamic range of a image sensor.
 |
 |
 |
 |
Matlab have interesting possibility for creating HDR from series of LDR images.
We can easy make script for online & one click make HDR from series of images with different exposure times.
Reference:
- pfsTools
- exrTools
- cvTool: GPU accelerated tools
- Tone Mapping algos. With image/video samples.
- Gallery of Reference Tone Mapped Images