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--></style></head><body bgcolor=white lang=DE link="#0563C1" vlink="#954F72"><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt'>Hi all,<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt'>does petsc provide some functionality to read images files (png, pgm, jpg, ...) and also to write such files? I’d like to do some low level image processing tasks where I need direct access to the pixel values. So anything that gives me a vector or matrix with this data would be perfect.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt'>Best regards,<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt'>Laurent<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:10.5pt;font-family:"-webkit-standard","serif";color:black;mso-fareast-language:DE'>% ------------------------------------------------------------- %<o:p></o:p></span></p><div><p class=MsoNormal><span style='font-size:10.5pt;font-family:"-webkit-standard","serif";color:black;mso-fareast-language:DE'>Dr. Laurent Hoeltgen<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:10.5pt;font-family:"-webkit-standard","serif";color:black;mso-fareast-language:DE'><o:p> </o:p></span></p></div><div><p class=MsoNormal><span style='font-size:10.5pt;font-family:"-webkit-standard","serif";color:black;mso-fareast-language:DE'>Chair for Applied Mathematics<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:10.5pt;font-family:"-webkit-standard","serif";color:black;mso-fareast-language:DE'>Brandenburg University of Technology<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:10.5pt;font-family:"-webkit-standard","serif";color:black;mso-fareast-language:DE'>Platz der Deutschen Einheit 1, HG 3.26<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:10.5pt;font-family:"-webkit-standard","serif";color:black;mso-fareast-language:DE'>03046 Cottbus, Germany<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:10.5pt;font-family:"-webkit-standard","serif";color:black;mso-fareast-language:DE'><o:p> </o:p></span></p></div><div><p class=MsoNormal><span style='font-size:10.5pt;font-family:"-webkit-standard","serif";color:black;mso-fareast-language:DE'>Email: <a href="mailto:hoeltgen@b-tu.de"><span style='color:blue'>hoeltgen@b-tu.de</span></a><o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:10.5pt;font-family:"-webkit-standard","serif";color:black;mso-fareast-language:DE'>Web. <a href="http://www-user.tu-cottbus.de/~hoeltgen/"><span style='color:blue'>http://www-user.tu-cottbus.de/~hoeltgen/</span></a><o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:10.5pt;font-family:"-webkit-standard","serif";color:black;mso-fareast-language:DE'>Tel. +49 (0) 355 69 20 77<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:10.5pt;font-family:"-webkit-standard","serif";color:black;mso-fareast-language:DE'>Fax. +49 (0) 355 69 27 10<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:10.5pt;font-family:"-webkit-standard","serif";color:black;mso-fareast-language:DE'>% ------------------------------------------------------------- %<o:p></o:p></span></p></div><p class=MsoNormal><span style='font-size:11.0pt'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt'><o:p> </o:p></span></p></div></body></html>