man page of webhdr_rspplot


webhdr_rspplot - Plot the hdrgen response curve to a PNG image


webhdr_rspplot [options] 1.rsp [2.rsp .. N.rsp]

Options: --help brief help message --man full documentation --versions print version info of loaded modules --debug output intermediate image files for debugging --xdim width of graph --ydim height of graph --title graph title --crop crop white padding around graph --label label x and y axes --tics include axis tics with labels --output output file name


webhdr_rspplot will read one or more RSP files containing the response curve coefficients for/from processing an exposure-bracketed sequence of photographs into an HDR image. Those coefficient define a polynomical which rspplot will plot to a PNG image with the help of gnuplot.



Print a brief help message and exit.


Print the manual page and exit.


Print version information of the program, loaded modules, Perl, and the OS.


Keep the gnuplot file for debugging. This also prints additional information that might be helpful for troubleshooting.

--xdim, --ydim

The width and height of the graph. The default for these options is 400 and 300 pixels, resp.


Output file. The default here is 'rsp.png', which the software will attempt to write to the working directory.


Crop the white border around the graph, labels and title. This is not terribly useful because the final dimensions of the graph are difficult to predict.


Label the x and y axes. If this option is enabled, the x-axis will be labelled 'Pixel value', and the y-axis 'Brightness'. This is not configurable.


Title of the graph. If not given, not title will be put on the graph.


rspplot relies on gnuplot which must be installed and be found in $PATH.


To plot the response curve for file snapshot.rsp, giving it the title "Snapshot Box" and saving the PNG to snapshot_reponse.png: --labels -x 384 -y 288 -o snapshot_response.png --title
  "Snapshot Box" snapshot.rsp


Currently, only the first RSP file is processed. Any additional ones are ignored. If more than one RSP file is given, the green channel (option?) should be plotted for all...


Copyright 2013 Axel Jacobs

This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program. If not, see <>.