• Christopher DoughtySam MooreToby MarthewsLeaf Area Index

    Hi all,

    I am trying to analize my hemispherical pictures, I have the CAN eye software and followed the manual steps but I did not get good results. I think there is one step missing. Please anyone who could help me with that.


    • Thumb_sam_0693
      About 6 years ago

      Hi Jhon,

      Sorry for the delay in responding to you - the reason for this is that we are currently undergoing a review of how we analyse hemispherical photos. Essentially, for all the reasons you mention above regarding 'optical centre', 'angular resolution' etc...and moreover the calibration process that is now required in CAN-EYE, we are moving to a different, freely downloadable software analysis program called Hemisfer (http://www.wsl.ch/dienstleistungen/produkte/software/hemisfer/download_EN) - the free version is fully functional (as well as far more intuitive than CAN-EYE), the only limitation being it's resolution limits. We are in the process of purchasing a number of licenses which give us access to the limit-free resolution version and can share this with you in time. In the meantime, may I suggest that you follow the link above and try running some of your photos through the free version to get accustomed to the software? For peace of mind, you can even compare some of the results from Hemisfer with CAN-EYE - we have also done this and there is good agreement (even with the free version). Let me know how you get on.

      All best from Oxford,
      Sam and the GEM team

    • Thumb_photo0133
      Over 6 years ago

      Is there any source where I can find this project function? or do I have to use any default settings? I am using a Nikon Coolpix 4500 and a Nikon Fisheye FC-E8. The version of CAN_EYE is V6313

    • Thumb_photo0133
      Over 6 years ago

      Hi again,

      I followed all the steps: Open CAN-EYE, Hemispherical Images/RGB Images/upward and I had to stop in the next step which asks to specify a project function. I have read something about it and is related to camera+lens caracteristics. There are also other required caracteristics that I do not know how to fill up: Image size, optical centre, Sub-sampling, angular resolution, fapar computation. So how should I set them up? How do I interpretate the results?.



  • Leaf Area Index

    Hi all

    I have a 60D EOS CANON camera and a SIGMA 8mm fish eye lens used to take hemyspherical pictures. Both devices work very well but the pictures don't look complete (i.e. upper and lower parts are missing as showed in attached one). I think I need to change the configuration but don't know how to do it. Please help me with this. I really appreciate any piece of technical advie.

    Thanks in advance

    Thumb_img_0810 Thumb_img_0798
    • Thumb_sam_0693
      Over 7 years ago

      Hi Jhon, apologies for the slow response to this. I myself use an ancient Nikon Coolpix 4500 and attach a Nikon Fisheye FC-E8 converter lens on it, so I'm afraid I'm unfamiliar with the EOS 60D. However, I know that you normally have to go into settings and change the lens type to 'fisheye' - normally there are 2 fisheye settings, one is 'full frame' and the other is 'standard' - it sounds to me like you may have it on the 'full frame' setting, which would cut off the corners as you describe. Try changing the lens type settings, if indeed the 60D has these features - sorry i can't be of any more help - I'm sure someone within the network uses a 60D thought...I'll have a think. Good luck!