mbr@flash.bellcore.com (Mark Rosenstein) (10/02/90)
We have an Abekas A60, that I am trying to dump images to via rcp from a 4D/25. Abekas's normal mode is images in yuv, but they are supposed to be able to take images in rgb format, of which I foolishly rendered a bunch. I have not sucessfully transfered them, and before I convert them all to yuv myself, I'd like to check if anyone has successfully done this. When I do the transfer to the abekas in rgb mode, I get a dot pattern imposed on my image. There are 32 dots across the screen, and 7 scan lines between the dots, and the rows of dots are angled down about 10 degrees. The dots are at the same place on different images (though at different places on different fields). To get a minimal case, I conduct the following experiment. Frame 420 on the abekas is fine. From my PI: rcp a60:420.yuv /tmp/420.yuv #transfer from abekas hostname a60 to my PI rcp /tmp/420.yuv a60:421.yuv #transfer back and frame 421 is fine. The next experiment rcp a60:420.rgb /tmp/420.rgb #now do transfer in rgb mode rcp /tmp/420.rgb a60:421.rgb and I get the bunch of dots. Confounding data is that my PI is on a different net than the Abekas. Also repair has been through and changed out a bunch of boards on the A60 to no avail. [No one to my knowledge has tried this type of transfer here before, though]. Finally, from a Sun only feet away from the Abekas, I can do the above experiment and only get say one dot per entire frame. Interestingly, I can rcp the rgb file from my sgi to the sun and then over to the Abekas, with again only say one dot per frame. Has anyone had any relevant experience? Thanks. Mark.
xxjgh@dali.lerc.nasa.gov (Jay G. Horowitz) (10/03/90)
In article <MBR.90Oct1165857@ponape.flash.bellcore.com> mbr@breeze.bellcore.com (Mark Rosenstein) writes: >We have an Abekas A60, that I am trying to dump images to >via rcp from a 4D/25. Abekas's normal mode is images in yuv, but >they are supposed to be able to take images in rgb format, of which >I foolishly rendered a bunch. I have not sucessfully transfered them, >and before I convert them all to yuv myself, I'd like to check if >anyone has successfully done this. > >To get a minimal case, >I conduct the following experiment. Frame 420 on the abekas is fine. >From my PI: >rcp a60:420.yuv /tmp/420.yuv #transfer from abekas hostname a60 to my PI >rcp /tmp/420.yuv a60:421.yuv #transfer back >and frame 421 is fine. The next experiment >rcp a60:420.rgb /tmp/420.rgb #now do transfer in rgb mode >rcp /tmp/420.rgb a60:421.rgb >and I get the bunch of dots. Unless your original image was a bunch of dots, you have problems. We have an A60 on a network with several PI's and what you typed above works fine, though, as expected, the .rgb transfer is slower. On reading your letter I at first thought you might have prepared your .rgb images incorrectly and confused them with .rgb files created by the various iris image utilities such as snapshot. (I know you wouldn't have done it but many readers out there are unfamiliar with the a60 and might have flooded the network with such suggestions. This way I insult your intelligence rather than theirs (:-)) However, as you rcopied from the a60 in rgb format and tried to send it right back it should have worked. -- .......................................................................... Jay G. Horowitz "For the finest in kosher pixels!" NASA Lewis Research Center (216) 433-5194 xxjgh@dali.lerc.nasa.gov (128.156.1.48) ..........................................................................