Dear Group,
I'm using an Industrial video camera to capture exposure bracketed JPG
stills that I'd like to turn into HDR images. The problem that I'm
having is that HDRgen and Photosphere both throw an error:
from HDRgen=
phdrimg.cpp@560>data: fc2_save_2012-04-20-202102-0000.jpg: needs
exposure calibration
or from Photoshpere=
Inkown image exposure(s)
using Exiftool I've tried writing to the header in each JPG like so:
exiftool -ExposureTime='1/5' image_1.jpg
However I continue to get the same exposure errors. Is there more
that I need to add into the Header? Below is the header printed from
exiftool for a sample JPG taken by the camer:
==> exiftool -h fimage_1.jpg
<!-- image_1.jpg -->
<table>
<tr><td>ExifTool Version Number</td><td>8.88</td></tr>
<tr><td>File Name</td><td>fc2_save_2012-04-20-202102-0000.jpg</td></tr>
<tr><td>Directory</td><td>.</td></tr>
<tr><td>File Size</td><td>637 kB</td></tr>
<tr><td>File Modification Date/Time</td><td>2012:04:20 14:48:31-07:00</
td></tr>
<tr><td>File Permissions</td><td>rwxr-----</td></tr>
<tr><td>File Type</td><td>JPEG</td></tr>
<tr><td>MIME Type</td><td>image/jpeg</td></tr>
<tr><td>JFIF Version</td><td>1.01</td></tr>
<tr><td>Exif Byte Order</td><td>Big-endian (Motorola, MM)</td></tr>
<tr><td>X Resolution</td><td>72</td></tr>
<tr><td>Y Resolution</td><td>72</td></tr>
<tr><td>Resolution Unit</td><td>inches</td></tr>
<tr><td>Y Cb Cr Positioning</td><td>Centered</td></tr>
<tr><td>Exposure Time</td><td>1/60</td></tr>
<tr><td>Exif Version</td><td>0230</td></tr>
<tr><td>Components Configuration</td><td>Y, Cb, Cr, -</td></tr>
<tr><td>Flashpix Version</td><td>0100</td></tr>
<tr><td>Color Space</td><td>Uncalibrated</td></tr>
<tr><td>Image Width</td><td>1280</td></tr>
<tr><td>Image Height</td><td>960</td></tr>
<tr><td>Encoding Process</td><td>Baseline DCT, Huffman coding</td></tr>
<tr><td>Bits Per Sample</td><td>8</td></tr>
<tr><td>Color Components</td><td>3</td></tr>
<tr><td>Y Cb Cr Sub Sampling</td><td>YCbCr4:2:0 (2 2)</td></tr>
<tr><td>Shutter Speed</td><td>1/60</td></tr>
<tr><td>Image Size</td><td>1280x960</td></tr>
</table>
As always thanks for any info or help.
Kind regards,
Chris
Christian Humann ~ Associate
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