shape from shade, so i do not take over Bjorn's |
shape from shade, so i do not take over Bjorn's |
Apr 7 2010, 04:03 AM
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Member Group: Members Posts: 890 Joined: 18-November 08 Member No.: 4489 |
So that i do not take over his nice thread i figured i would start a new one
I am just figuring it out so bear with me Rhea This is a example - very early example http://www.shatters.net/forum/viewtopic.php?f=5&t=15847 one that i am going to redo . the program i am using "Cyclops" has a few bugs Enceladus this is a good example a bit better than the above the close ups are a 8k level 3 VT with and without a texture over it then a 4k level2 vt unfortunately i still have to figure out a bug .I need to run a highpass on it ( the 32 bit isis dem ) Cyclops exports to a 3d *.ply this is easy to export to a isis cub and i get this ( this happens when i combine 16 smaller images into one big one ) and this example is at 1/2 size Just a bit of a bug !!! |
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Apr 30 2010, 02:06 AM
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#2
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Member Group: Members Posts: 890 Joined: 18-November 08 Member No.: 4489 |
i am calling it a "bug" because i am doing something with the program it was not fully intended to do
and i am still learning it The stripping is do to the G'mig highpass in gimp if i do a highpas in isis ( 3 of them R,G,and B ) or use the nip2 fft Gaussian highpass ( must be a power of 2 image - 1024,512,256,square image) it dose not show up but the results are worse calculating the "direction to light source" from the isis kernel and IMG data is a good idea I was going to look into doing that on the next map .For know i am "taking a guess" .Seeing as some of the dione images have a radial lighting to them ( do to how the light falls on the sphere ) [attachment=21524:N1507742601_2a.jpg] then there is the changing "height of the light source in the sfs window there is the x.y.z for the light source i have been finding that i get better results when the light is coming from ~ aprox. 1.0 0.5, 1.0 but some images ( do the the shape of the sphere ) have a big change in lighting " change in z " -- these are Approx. -- [attachment=21525:N1481766854_1a.jpg] -- as to -- QUOTE This may be a stupid question but how did you export to a .ply file? The only output I was able to get was a BMP file. the sfs dose output bmp A second program is needed to convert that normal map to a .ply integration [attachment=21526:cyclops_win.png] i can not run cyclops on Arch linux ( only on CentOS 5.4 ) so i can not use a shot of mine then the fun part converting the .ply to a isis.cub i use blender set the z location to 0.5 the z exaggeration to 3.0( but this is after i highpass the normalmap ) and export to a .obj an .obj is a text format CODE # Blender3D v249 OBJ File: # www.blender3d.org v -0.639823 0.519523 0.632565 v -0.629778 0.519021 0.632603 v -0.619747 0.518432 0.632637 v -0.609672 0.518119 0.632681 the 3'd colom 0.519523,0.519021,0.518432 is z import it into calc ( excel )and export the colum only ascii2isis gives a 32 bit float image then isis fx to convert it to a normalised unsinged 16bit fx eq (( f1-"min value" )/ "max - min values") * 65538 QUOTE Actually I'm getting the impression that the Windows version I'm using has somewhat less features than the Linux version yes and NO i built the google cvs code ( updated in feb 2010) the prebuilt was updated in 2008 http://code.google.com/p/hyperion-cv/source/checkout |
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