Gentlemen, You have been a wealth of information and tips. Thank you for keeping me in this loop. I am building skills rapidly because of these excellent publications:
- "J for C programmers" - "Fractals Visualizations and J" - "J 602 Reference Card" - "J Companion for Statistical Calculations" - "J Tutorial and Statistical Package" - "With J: Image Processing 2: Color Spaces" It is possible to extract more information from images than is commonly believed. In C++ I have successfully extracted: 1. multiple points from diffraction patterns 1 order of magnitude below traditional Nyquist limit 2. boundaries dominated by noise floor data This C++ code has reached a level of complexity difficult to maintain. J appears to manage much of that complexity. My challenge is to convert my clear ideas into clear J. The ideas are simple enough that expression by a facile user of J would be hours at most. I expect it will take me months to achieve a less satisfactory expression plagued by beginner mistakes. Could I get one of you to either contract or volunteer a little time to aid me? The ideas are not rocket surgery, but might be different enough to be interesting. We could publish some of the resulting J as a library for others to enjoy. On Mon, Mar 23, 2009 at 12:37 AM, bill lam <[email protected]> wrote: > On Sun, 22 Mar 2009, Cliff Reiter wrote: > > This is very interesting to me. I have wanted to think about > > the broader design of a successor to image3 and using system > > resources and the built in bmp utilities makes sense (these > > were not available way back then). But there are impediments > > and image3 has been so darn stable. I would love to see some > > typical examples of how you integrate your use of platimg and > > image3 and if you can articulate why this has been effective for > > you I would be most interested. > > I cannot remember exactly why I did not choose image3 for i/o, > possible reasons are: I never intended to use quicktime mov and the 64 > bit version of image3 dll was not available. So I rip individual > verbs from image2/image3 into my utility script such as image_wh and > image_resize. I also read picture, lighten it, and use glpixels to > set it as background image. > lighten=: 1 : 'm+<.0.5+(255%~255-m)*y' > lightenb=: 1 : 'a.{~m+<.0.5+(255%~255-m)*a.i.y' > although hls should be more accurate, but this should serve the > purpose. > > Ric have already demonstrated data read using platimg is equivalent to > that from image3. In summary I view image3 as a command-line version > of photoshop, and use platimg just for input/output. > > -- > regards, > ==================================================== > GPG key 1024D/4434BAB3 2008-08-24 > gpg --keyserver subkeys.pgp.net --recv-keys 4434BAB3 > 唐詩277 柳中庸 征人怨 > 歲歲金河復玉關 朝朝馬策與刀環 三春白雪歸青塚 萬里黃河繞黑山 > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm > -- This e-mail is from Jonathan D. Lettvin, and may contain information that is confidential or privileged. If you are not the intended recipient, do not read, copy or distribute the e-mail or any attachments. Instead, please notify the sender and delete the e-mail and any attachments. Thank you. Jonathan D. Lettvin ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
