device/nikon_d50.h

   1 // code by HJ Hornbeck, based on code copyright David Hilvert
   2
   3
   4 /*  This file is part of the Anti-Lamenessing Engine.
   5
   6     The Anti-Lamenessing Engine is free software; you can redistribute it
   7     and/or modify it under the terms of the GNU General Public License as
   8     published by the Free Software Foundation; either version 2 of the License,
   9     or (at your option) any later version.
  10
  11     The Anti-Lamenessing Engine is distributed in the hope that it will be
  12     useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
  13     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General
  14     Public License for more details.
  15
  16     You should have received a copy of the GNU General Public License
  17     along with the Anti-Lamenessing Engine; if not, write to the Free Software
  18     Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19 */
  20
  21 #ifndef __nikon_d50_h__
  22 #define __nikon_d50_h__
  23
  24 #include "../d2.h"
  25 #include "../d2/render/psf/psf.h"
  26
  27 /*
  28  * Device module for the Nikon D50.
  29  *
  30  * Much like the Canon, alignment works best with RAW input created by
  31  *  dcraw, with the -D/-d and -4 flags enabled. If you get bayer patterns
  32  *  in the output image, and have Irani-Peleg iteration on, try swapping
  33  *  the inputs from RAW to processed (but lossless) and ditch the device
  34  *  setting.
  35  *
  36  */
  37
  38 class nikon_d50 {
  39 public:
  40
  41         /*
  42          * Linear colorspace PSF
  43          *
  44          * This PSF isn't an exact match, instead balancing quality, speed, and
  45          *  robustness. While some blur will probably remain, at scale factors
  46          *  less than 3 it's easily corrected for in the GIMP (or similar).
  47          *  Larger diameters perform more sharpening, but run time increases
  48          *  by the square of the diameter. Finally, the PSF should vary by
  49          *  lens and focal length, but this mild one works relatively well
  50          *  across a wide range of lenses.
  51          */
  52
  53         static d2::psf *lpsf() {
  54
  55                 return d2::psf_parse::get( 1, "box=1^circle=1.1^circle=1.1" );
  56                 }
  57
  58         /*
  59          * Non-linear colorspace PSF
  60          *
  61          * The linear PSF works perfectly with RAW input, and even performs
  62          *  well if I substitute images with non-linear colourspace. I
  63          *  haven't found a need for this, yet.
  64          */
  65
  66         static d2::psf *nlpsf() {
  67
  68                 return NULL;
  69                 }
  70
  71         /*
  72          * Exposure
  73          *
  74          * The defaults for the Canon work well enough.
  75          */
  76
  77         class exposure : public d2::exposure_default {
  78                 d2::pixel linearize(d2::pixel input) const {
  79                         return input * get_multiplier();
  80                 }
  81                 d2::pixel unlinearize(d2::pixel input) const {
  82                         return input / get_multiplier();
  83                 }
  84         };
  85
  86         /*
  87          * View Angle
  88          *
  89          * Copy/Paste from the Canon again.
  90          */
  91
  92         static ale_pos view_angle() {
  93                 fprintf(stderr, "\n\n*** Error: tried to obtain view angle for a sensor device. ***\n\n");
  94                 exit(1);
  95                 // return 30;
  96         }
  97
  98         /*
  99          * Bayer pattern
 100          *
 101          * Adding this function because this info should be here, instead
 102          *  of hard-wired into the argument parsing code.
 103          */
 104
 105         static unsigned int bayer() {
 106                 return IMAGE_BAYER_BGRG;
 107         }
 108 };
 109
 110 #undef LPSF_ROWS
 111 #undef LPSF_COLS
 112 #undef NLPSF_ROWS
 113 #undef NLPSF_COLS
 114
 115 #endif