what :
Home > Objects > V > v.packy_uv > author : David Rokeby

v.packy_uv

v.packy_uv takes 2 gray scale streams and combines them into an yuv image.


v.packy_uv takes 2 gray scale streams and combines them into an yuv image. The first stream is the y values. The second stream contains the u and v values (alternating u then v then u) each at 1/2 the resolution of the y components. The yyyy stream and the uvuv streams are packed into a yuyvyuyv stream (normal yuv) N.B. the u and v streams are assumed to be signed. 0 - 127 are positive values and 128 - 255 are actually -128 to -1. (Note that this is different from the pseudo-signed images like those from v.motion (signed mode) where 0 - 127 are really negative and 128 - 255 are positive. To convert an unsigned or pseudo-signed int8 stream to a signed int8 stream or vice versa, you can use a v.xor 128 object.
from the library :
softVNS
Format : External
Environment : jitter / max
commercial
Max 4.x


http://homepage.mac.com/davidrokeby/softVNS.html

4855 objects and 135 libraries within the database Last entries : December 23rd, 2023 Last comments : 0 0 visitor and 17996040 members connected RSS
Site under GNU Free Documentation License