Problem with response function in 'pfshdrcalibrate'

[Dominika Knera]

Hi,

I am new to Ubuntu and pfstools. I've followed the procedure mentioned in README_Ubuntu to install pfstools (version 2.1.0) in my Ubuntu 17.10. During installation I had some problems with OpenCV with the "nonfree" modules, but I managed it. After that, installation of pfstools went smooth.

I started working with pfstools acording to:
http://resources.mpi-inf.mpg.de/hdr/calibration/pfs.html
I used the images from exemplar (exposures.tgz) and I tried to recover the response curve as it was described in mentioned tutorial. I had put command in terminal:
pfsinhdrgen sample.hdrgen | pfshdrcalibrate -v -s camera.response
firstly it started working well, but after few seconds  in terminal appeared strange characters  like that:

:�
�: ��:hO�:�U�:� �:Љ�:���:b��:h��:lE�:H��:z��:���:HҶ:���:�ʢ:�<�: 1�:pK�:)Ys:��a^Q:�!M:z?8:�1/:4�S:7�.:�_B: XM:��Y: uu:�"�:އ�:�a�:& �:
                                                    ~�:G׳:��:�&�:T��:S�|:$�k:� X:y�T:Z�[: �I:o�;: n<:�!;:Pc4:Ԛ#:� !:.'#:��):J�%:��!:��%:�b+:* 1:��.: �/:@�+:�52:Rx3:��/:�e):"(:˷-:0a0:��+:b�&:�
:��U(:$� :j : �
:DF: ��9���9
            ��9���9 �9G��9���9���9B��9�#�9���9�q�9���9�D�9*@�9�ϣ9� �9�:�9+3�9� �9wT�9�� :�,�:!M ;k}u;�Z�;���; #�;� �;Cݸ;
                                        ��;�4�;���;k��;*�;���;�U�;׮�;�u�;,0�;�c<�1�;@��;���; <�;۳�;�(�;�;���;@Jw;��f;T_;&�Q;bX`;���;���; o�;���;N �;%��;���;N �;���;��;� �;~��;n��;���;k��;���;�O�;0��;e4�;�2�;� �;#��;�(�;w��;�:�;�l�;({�;�|�;�b�;� �;�t�;}��;J��; Ƒ;� �;�ϖ;K��;� �;*��;� �;�.�;�    o;'�S;�.E;w^9;�/;H�%� ;�X ;$� ;a ;� ;��";��#;J ;�4 ;�� ;�m ;dominika@011T4-732LINUX:~$ 62;c62;c62;c622;c62;c62;c62;c62;c62;c62;c62;c62;c62;c62;c62;c62;c62;c62;c62;c62;c62;c62;c62;c62;c62;c62;c62;c62;c62;c62;c62;c62;c62;c62;c62;c62;c62;c62;c62;c62;c62;c62;c62;c62;c62;c62;c62;c62;c62;c62;c62;c62;c62;c62;c62;c62;c62;c62;c62;c62;c62;c62;c62;c62;c62;c62;c62;c62;c62;c62;c62;c62;c62;c62;c62;c62;c62;c62;c62;c62;c62;c62;c62;c62;c62;c62;c62;c62;c62;c62;c62;c62;c62;c62;c62;c62;c62;c62;c62;c62;c62;c62;c62;c62;c62;c62;c62;c62;c62;c62;c62;c62;c62;c62;c62;c62;c62;c62;c62;c62;c62;c62;c62;c62;c62;c62;c62;c62;c62;c


File with response function occured, however it not look like response function in tutorial and function of weight is not symmetric and hihger than 1.

I tried to add "-r linear" in pfshdrcalibrate, however it still not working.

Below I attached response functions I got using default (first graph) and linear settings (second graph) as well as function of weight for both settings (third graph), additionally I add hdrgen file.

Could you help me and suggest what I  doing wrong.

Thanks in advance !!

Dominika











hdrgen file:
/home/dominika/exposures/img01.jpg 0.0769231 2.8 100 0
/home/dominika/exposures/img02.jpg 0.1 2.8 100 0
/home/dominika/exposures/img03.jpg 0.25 2.8 100 0
/home/dominika/exposures/img04.jpg 0.3125 2.8 100 0
/home/dominika/exposures/img05.jpg 1 2.8 100 0
/home/dominika/exposures/img06.jpg 1.25 2.8 100 0
/home/dominika/exposures/img07.jpg 3.33333 2.8 100 0
/home/dominika/exposures/img08.jpg 4 2.8 100 0
/home/dominika/exposures/img09.jpg 60 2.8 100 0
/home/dominika/exposures/img10.jpg 80 2.8 100 0
/home/dominika/exposures/img11.jpg 320 2.8 100 0
/home/dominika/exposures/img12.jpg 400 2.8 100 0
/home/dominika/exposures/img13.jpg 1000 2.8 100 0