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ppm2cyuv.man
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1995-01-12
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PPM2CYUV(1) PPM2CYUV(1)
NNAAMMEE
ppm2cyuv - Component Y Cb Cr (YUV) conversion to raw PPM
SSYYNNOOPPSSIISS
ppppmm22ccyyuuvv iinnffiillee oouuttffiillee [[--zz ssuuffffiixx]]** [[--CCCCIIRR660011]]
DDEESSCCRRIIPPTTIIOONN
_p_p_m_2_c_y_u_v is a conversion program between component the raw
ppm file format and component yuv files. The chrominances
of the input are decimated by a factor of 2 in both the
horizontal and vertial dimensions.
OOPPTTIIOONNSS
--CCCCIIRR660011
specifies that the CCIR601 YCbCr colorspace is to
be used instead of the JFIF colorspace.
--zz denotes the component file suffixes in sequential
order. For example
--zz ..yy..ccllrr --zz ..uu..ccllrr --zz ..vv..ccllrr indicates that the
luminance and the two chrominance files end with a
suffix of ..yy..ccllrr,, ..uu..ccllrr,, and ..vv..ccllrr,, in that
order. If unspecified, the suffixes default to ..YY,,
UU,, and ..VV..
EEXXAAMMPPLLEESS
To convert a ppm file in iinn..ppppmm
to a triple set of raw raster scan YCbCr (also known as
digital YUV) files with dimension 352x240 Y, 176x120 U,V,
with labels, hheelllloo00..YY hheelllloo00..UU hheelllloo00..VV,, type
ppppmm22ccyyuuvv iinn..ppppmm hheelllloo00
The PPM file format is very portable - see Jef Poskanzer's
PBMPLUS library.
FFTTPP
_p_p_m_2_c_y_u_v is available by anonymous ftp from _h_a_v_e_-
_f_u_n_._s_t_a_n_f_o_r_d_._e_d_u_:_p_u_b_/_c_v_/_C_V_v_1_._2_._1_._t_a_r_._Z_.
BBUUGGSS
Probably lurking somewhere. Please inform the author at
achung@cs.stanford.edu if any bugs are found.
AAUUTTHHOORR
Andy Hung
14 June 1993 1