Venkat, I'm not the author of that program, but yes - it seems to convert the file and save it as Tiff. I'm not sure if it process metadata needed for the correct convertion (our ImageJ plugin un-applies all processing between the raw pixels and the camera output (i.e. sensor internal analog gain for each channel).
Andrey ---- On Sun, 14 Oct 2012 00:20:24 -0700 Venkat Subbiah<[email protected]> wrote ---- > In elphel_dng.c file I see a reference to a gamma file, what is the purpose > of this file? > if ((gam = atof(argv[1])) <= 0) { > fprintf (stderr, "Gamma must be positive!\n"); > return 1; > } > > > ---------------------------------------------------------------------------------------------- > > > First want to figure out how I can take this data and write out > for (row=0; row < cinfo.image_height; row += 16) { > for (r=0; r < 16; ) > r += jpeg_read_scanlines (&cinfo, buf+r, 16-r); > for (r=0; r < 16; r++) { > for (col=0; col < cinfo.image_width; col += 16) > for (c=0; c < 16; c++) > out[col+c] = buf[ROT(r)][col+ROT(c)]; > TIFFWriteScanline (tif, out, row+r, 0); > } > } > > > > > I am new to the jpeg API, but In this loop looks like it takes the data from > the JP4 file and writes it out as a tiff file. > > > I would like to figure out how I could write this out as just sequence of > bytes (or 16-bit words) > corresponding to (width+4)*(height+4), where width and height are > dimensions, rather than converting it to tiff file. > Would this data be be exactly similar to the data from the raw camera file? > _______________________________________________ > Support-list mailing list > [email protected] > http://support.elphel.com/mailman/listinfo/support-list_support.elphel.com > _______________________________________________ Support-list mailing list [email protected] http://support.elphel.com/mailman/listinfo/support-list_support.elphel.com
