hi all,
pdp-0.7 is available at http://zwizwa.fartit.com/pd/pdp mainly a bugfix and code reorganization release.
there are 2 targets now: linux and linux+mmx.
enjoy, tom
from CHANGES.LOG:
v0.7: 2003/01/12 moved image format conversion routines to pdp_llconv.c added support for rgb->PDP_IMAGE_YV12 in pdp_v4l, pdp_qt added pdp_grey, pdp_chrot, pdp_scope~ objects moved mmx wrappers to pdp_imageproc_mmx.c added portable c code in pdp_imageproc_portable.c added mmx code for pdp_gain fixed bug in pdp_mix/pdp_mix2 fixed bug in pdp_bq (removed state reset) move CA stuff to separate lib (see scaf/)
hi,
i had to upgrade the PiDiP package also because some mmx prototypes have changed, so, it's now PiDiP v0.7.0, nothing's new, it's just been made compatible with PDP v0.7.
btw, i have a color conversion problem and as people spoke about YUV/RGB colormaps, i may ask for an advice here :
i'm using color conversions from effectv, the formulas are :
/* * conversion from YUV to RGB * r = 1.164*(y-16) + 1.596*(v-128); * g = 1.164*(y-16) - 0.813*(v-128) - 0.391*(u-128); * b = 1.164*(y-16) + 2.018*(u-128); * conversion from RGB to YUV * y = 0.257*r + 0.504*g + 0.098*b + 16 * u = -0.148*r - 0.291*g + 0.439*b + 128 * v = 0.439*r - 0.368*g - 0.071*b + 128 */
seems it's not accurate, when i pick up a color in an image, i have another color close to the original.
thanx for pointing me to the right source of information /
cheers,
sevy/yves
Tom Schouten wrote:
hi all,
pdp-0.7 is available at http://zwizwa.fartit.com/pd/pdp mainly a bugfix and code reorganization release.
there are 2 targets now: linux and linux+mmx.
enjoy, tom
from CHANGES.LOG:
v0.7: 2003/01/12 moved image format conversion routines to pdp_llconv.c added support for rgb->PDP_IMAGE_YV12 in pdp_v4l, pdp_qt added pdp_grey, pdp_chrot, pdp_scope~ objects moved mmx wrappers to pdp_imageproc_mmx.c added portable c code in pdp_imageproc_portable.c added mmx code for pdp_gain fixed bug in pdp_mix/pdp_mix2 fixed bug in pdp_bq (removed state reset) move CA stuff to separate lib (see scaf/)
PD-announce mailing list PD-announce@iem.kug.ac.at http://iem.kug.ac.at/cgi-bin/mailman/listinfo/pd-announce
btw, i have a color conversion problem and as people spoke about YUV/RGB colormaps, i may ask for an advice here :
i'm using color conversions from effectv, the formulas are :
/*
- conversion from YUV to RGB
- r = 1.164*(y-16) + 1.596*(v-128);
- g = 1.164*(y-16) - 0.813*(v-128) - 0.391*(u-128);
- b = 1.164*(y-16) + 2.018*(u-128);
- conversion from RGB to YUV
- y = 0.257*r + 0.504*g + 0.098*b + 16
- u = -0.148*r - 0.291*g + 0.439*b + 128
- v = 0.439*r - 0.368*g - 0.071*b + 128
*/
i use exactly the same formula for conversion from the rgb colour model from v4l and i've noticed some differences too compared to directly capturing in yuv.. maybe the standard is not that standard?
this page mentions another formula, along side the one above. maybe you can try that one?
oops.. i messed up somewhere when moving all the colour conversion routines. fixed in 0.7.1
On Sunday 12 January 2003 17:12, Tom Schouten wrote:
hi all,
pdp-0.7 is available at http://zwizwa.fartit.com/pd/pdp mainly a bugfix and code reorganization release.
there are 2 targets now: linux and linux+mmx.
enjoy, tom
from CHANGES.LOG:
v0.7: 2003/01/12 moved image format conversion routines to pdp_llconv.c added support for rgb->PDP_IMAGE_YV12 in pdp_v4l, pdp_qt added pdp_grey, pdp_chrot, pdp_scope~ objects moved mmx wrappers to pdp_imageproc_mmx.c added portable c code in pdp_imageproc_portable.c added mmx code for pdp_gain fixed bug in pdp_mix/pdp_mix2 fixed bug in pdp_bq (removed state reset) move CA stuff to separate lib (see scaf/)
PD-announce mailing list PD-announce@iem.kug.ac.at http://iem.kug.ac.at/cgi-bin/mailman/listinfo/pd-announce
-
Tom Schouten -
Yves Degoyon