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PMIO -- The Pixel Mask I/O package (PLIO for image masks).
PLIO -- The Pixel List I/O package (no ties to IMIO)
A PIXEL LIST is a compressed, region oriented data structure used to store
an image matrix. The pixel list package is used to create, manage, and access
this data structure. Although the PLIO package can stand alone and is useful
in its own right, one of the main uses of the pixel list package is in the IMIO
interface, which can access a pixel list as if it were a MASK IMAGE.
See PLIO.hlp for further information on the PLIO package and image masks.
The pixel list package itself does not support any fancy image coordinate
transformations. If an image has an associated pixel mask, the pixel mask
refers to the physical image matrix. An application written at the IMIO level
where an image section transformation may be defined for an image should
normally use the PMIO (pixel mask) package in preference to PLIO. PMIO is
equivalent to PLIO, except that coordinates are input in image section
coordinates, and a reference image is used to map such coordinates onto the
physical image matrix.
1. IMIO Mask Image Interface
im = im_pmmap (maskname, mode, ref_im|NULL)
im = im_pmmapo (pm, ref_im)
imseti (im, IM_RLIO, YES|NO) # enable range list i/o
imseti (im, IM_PMDES, pm) # inquire PM descriptor
pm = imstati (im, IM_PMDES)
bool = im_pmlne[123] (im[, lineno[, bandno]])
bool = im_pmsne[123] (im, x1, x2[, y1, y2[, z1, z2]])
bool = im_pmlnev (im, v)
bool = im_pmsnev (im, vs, ve, ndim)
mp = mio_open (maskname, flags, im) # Masked Image I/O
mp = mio_openo (pm, im)
value = mio_stati (mp, param)
mio_seti (mp, param, value)
mio_setrange (mp, vs, ve, ndim)
n|EOF = mio_[gp]lseg[silrdx] (mp, ptr, mval, v, npix)
mio_close (mp)
2. Pixel Mask Interface (uses reference image for section transformation)
pm = pm_newmask (ref_im, depth)
pm = pm_open (bufptr|NULL)
pm = pm_create (naxes, axlen, depth)
pm = pm_newcopy (pm)
pm_close (pm)
pm_[sg]size (pm, naxes, alxen, depth)
pm_seti (pm, param, value)
value = pm_stati (pm, param)
pm_debug (pm, outfd, maxcol, flags)
bool = pm_empty (pm)
pm_compress (pm)
pm_clear (pm)
pm_load (pm, bufptr)
nwords = pm_save (pm, bufptr, buflen, save_flags)
pm_loadf (pm, fname, title, maxch)
pm_savef (pm, fname, title, save_flags)
pm_[load|save]im (pm, imname[, save_flags])
ptr = pm_access (pm, v)
bool = pm_linenotempty (pm, v)
bool = pm_sectnotempty (pm, vs, ve, ndim)
pm[gp]l[lrp][sil] (pm, v, buf, b_depth, npix, rop)
pm_[set|get]plane (pm, v)
pm_point (pm, x, y, rop)
pm_circle (pm, x, y, r, rop)
pm_box (pm, x1,y1, x2,y2, rop)
pm_line (pm, x1,y1, x2,y2, width, rop)
pm_polygon (pm, x, y, npts, rop)
pm_rop (pm_src, vs, pm_dst, vs, vn, rop)
pm_stencil (pm_src, vs, pm_dst, vs, pm_stl, vs, vn, rop)
2.1 Random Access to a Pixel Mask
pmr = pmr_open (pm, plane, buflimit)
pmr_setrect (pmr, x1,y1, x2,y2)
mval = pmr_getpix (pmr, i, j)
pmr_close (pmr)
3. Pixel List Interface (stands alone; independent of IMIO; no coord xforms)
pl = pl_open (bufptr|NULL)
pl = pl_create (naxes, axlen, depth)
pl = pl_newcopy (pl)
pl_close (pl)
pl_[sg]size (pl, naxes, axlen, depth)
pl_seti (pl, param, value)
value = pl_stati (pl, param)
pl_debug (pl, outfd, maxcol, flags)
bool = pl_empty (pl)
pl_compress (pl)
pl_clear (pl)
pl_load (pl, bufptr)
nwords = pl_save (pl, bufptr, buflen, save_flags)
pl_loadf (pl, fname, title, maxch)
pl_savef (pl, fname, title, save_flags)
pl_[load|save]im (pl, imname[, save_flags])
ptr = pl_access (pl, v)
bool = pl_linenotempty (pl, v)
bool = pl_sectnotempty (pl, vs, ve, ndim)
pl[gp]l[lrp][sil] (pl, v, buf, b_depth, npix, rop)
pl_[set|get]plane (pl, v)
pl_point (pl, x, y, rop)
pl_circle (pl, x, y, r, rop)
pl_box (pl, x1,y1, x2,y2, rop)
pl_line (pl, x1,y1, x2,y2, width, rop)
pl_polygon (pl, x, y, npts, rop)
pl_rop (pl_src, vs, pl_dst, vs, vn, rop)
pl_stencil (pl_src, vs, pl_dst, vs, pl_stl, vs, vn, rop)
3.1 Random Access to a Pixel List
plr = plr_open (pl, plane, buflimit)
plr_setrect (plr, x1,y1, x2,y2)
mval = plr_getpix (plr, i, j)
plr_getlut (plr, bufp, xsize,ysize, xblock,yblock)
plr_close (plr)
3.2 Pixel, Line, and Range List Routines
pl_pixrop (px_src, xs, src_maxval,
px_dst, ds, dst_maxval, npix, rop)
pl_linerop (ll_src, xs, src_maxval,
ll_dst, ds, dst_maxval, ll_out, npix, rop)
pl_rangerop (rl_src, xs, src_maxval,
rl_dst, ds, dst_maxval, rl_out, npix, rop)
pl_linestencil (ll_src, xs, src_maxval, ll_dst, ds, dst_maxval,
ll_stn, xs, ll_out, npix, rop)
n = pl_[lrp]2[lrp][sil] (op_src, xs, op_dst, npix)
4. EXAMPLE
4.1 Sample Mask (pl_draw output)
40 .1111111..............................................................22222
39 .1111111..............................................................22222
38 .1111111...............................................................2222
37 .1111111...............................................................2222
36 .1111111............................................................4......
35 .1111111.....................11111111111111111111111111...........4444.....
34 .1111111.....................11111111111111111111111111........44444444....
33 .1111111......................1111111111111111111111111......44444444......
32 .1111111......................1111111111111111111111111...44444444.........
31 .1111111......................1111111111111111111111111.44444444...........
30 .1111111...........4..........1111111111111111111111115444444..............
29 .1111111...........4..........11111111111111111111155554444................
28 .1111111...........4..........111111111111111111155555544..................
27 .1111111...........4..........1111111111111111555555551....................
26 .1111111.....................11111111111111155555555111....................
25 .1111111.....................11111111111115555555111111....................
24 ............................1111111111155444444.1111111....................
23 ...........................111111111155544444....111111....................
22 ..............1...........1111111155555444........11111....................
21 ........................1111111155555554..........11111....................
20 ........................111111555555511...........11111....................
19 ........................111555555551111...........11111....................
18 ........................155555555111111...........11111....................
17 ......................445555551111111111.........111111....................
16 ....................444455551111111111111.......1111111....................
15 ..................4444445111111111111111111111111111111....................
14 ...............44444444.1111111111111111111111111111111....................
13 .............44444444......................................................
12 ..........44444444.........................................................
11 ........44444444...........................................................
10 .........4444........................22222.................................
9 ..........4.........................2222222..............22222.............
8 ....................................2222222.............2222222............
7 ....................................2222222.............2222222............
6 .....................................22222..............2222222............
5 11111111111111111111.....................................22222.............
4 11111111111111111111.......................................................
3 11111111111111111111.......................................................
2 11111111111111111111.......................................................
1 11111111111111111111.......................................................
123456789012345678901234567890123456789012345678901234567890123456789012345
1 2 3 4 5 6 7
4.2 Sample Debug Output (for above mask)
Mask 1EECD naxes=2 [75,40] maxval=177 plane=[75,40]
max buffered line size 1024, max actual line size 16
40 lines total, 40 are nonempty, mask is nonempty
llbp=42AF5, len=1190, op=583, free=189, nupdates=35
Index at 1EFF1 containing 40 lines:
4 4 4 4 17 26 35 35 166 177 187
194 201 208 218 228 241 254 266 554 292 568
319 333 347 360 492 507 523 539 423 435 447
459 471 483 148 148 157 157
Line list containing 40 lines:
[1:4] IH48(49) H20 Z55 (75,49)
[5] IH48(49) H20 IH1(50) Z37 H5 Z13 (75,50)
[6] IH49(50) Z37 H5 Z14 H7 Z12 (75,50)
[7:8] IH49(50) Z36 H7 Z13 H7 Z12 (75,50)
[9] IH51(52) P11 DH2(50) Z25 H7 Z14 H5 Z13 (75,50)
[10] IH51(52) Z9 H4 DH2(50) Z24 H5 Z33 (75,50)
[11] IH51(52) Z8 H8 Z59 (75,52)
[12] IH51(52) Z10 H8 Z57 (75,52)
[13] IH51(52) Z13 H8 Z54 (75,52)
[14] IH51(52) Z15 H8 DH3(49) Z1 H31 Z20 (75,49)
[15] IH51(52) Z18 H6 IS1(53) DH4(49) H30 Z20 (75,49)
[16] IH51(52) Z20 H4 IH1(53) H4 DH4(49) H13 Z7 H7 Z20 (75,49)
[17] IH51(52) Z22 H2 IH1(53) H6 DH4(49) H10 Z9 H6 Z20 (75,49)
[18] IH48(49) P25 IH4(53) H8 DH4(49) H6 Z11 H5 Z20 (75,49)
[19] IH48(49) Z24 H3 IH4(53) H8 DH4(49) H4 Z11 H5 Z20 (75,49)
[20] IH48(49) Z24 H6 IH4(53) H7 DH4(49) H2 Z11 H5 Z20 (75,49)
[21] IH48(49) Z24 H8 IH4(53) H7 DS1(52) DH3(49) Z10 H5 Z20 (75,49)
[22] IH48(49) P15 Z11 H8 IH4(53) H5 DH1(52) H3 DH3(49) Z8 H5 Z20 (75,49)
[23] IH48(49) Z27 H10 IH4(53) H3 DH1(52) H5 DH3(49) Z4 H6 Z20 (75,49)
[24] IH48(49) Z28 H11 IH4(53) H2 DH1(52) H6 DH3(49) Z1 H7 Z20 (75,49)
[25] IH48(49) Z1 H7 Z21 H13 IH4(53) H7 DH4(49) H6 Z20 (75,49)
[26] IH48(49) Z1 H7 Z21 H15 IH4(53) H8 DH4(49) H3 Z20 (75,49)
[27] IH48(49) Z1 H7 IH3(52) P12 DH3(49) Z10 H16 IH4(53) H8 DS4(49) Z20
(75,49)
[28] IH48(49) Z1 H7 IH3(52) P12 DH3(49) Z10 H19 IH4(53) H6 DH1(52) H2 Z18
(75,52)
[29] IH48(49) Z1 H7 IH3(52) P12 DH3(49) Z10 H21 IH4(53) H4 DH1(52) H4 Z16
(75,52)
[30] IH48(49) Z1 H7 IH3(52) P12 DH3(49) Z10 H24 IS4(53) DH1(52) H6 Z14
(75,52)
[31] IH48(49) Z1 H7 Z22 H25 IH3(52) Z1 H8 Z11 (75,52)
[32] IH48(49) Z1 H7 Z22 H25 IH3(52) Z3 H8 Z9 (75,52)
[33] IH48(49) Z1 H7 Z22 H25 IH3(52) Z6 H8 Z6 (75,52)
[34] IH48(49) Z1 H7 Z21 H26 IH3(52) Z8 H8 Z4 (75,52)
[35] IH48(49) Z1 H7 Z21 H26 IH3(52) Z11 H4 Z5 (75,52)
[36] IH48(49) Z1 H7 IH3(52) P61 Z6 (75,52)
[37:38] IH48(49) Z1 H7 IH1(50) Z63 H4 (75,50)
[39:40] IH48(49) Z1 H7 IH1(50) Z62 H5 (75,50)
Line list containing 40 lines:
[1:4] 1-20(49)
[5] 1-20(49) 58-62(50)
[6] 38-42(50) 57-63(50)
[7:8] 37-43(50) 57-63(50)
[9] 11(52) 37-43(50) 58-62(50)
[10] 10-13(52) 38-42(50)
[11] 9-16(52)
[12] 11-18(52)
[13] 14-21(52)
[14] 16-23(52) 25-55(49)
[15] 19-24(52) 25(53) 26-55(49)
[16] 21-24(52) 25-28(53) 29-41(49) 49-55(49)
[17] 23-24(52) 25-30(53) 31-40(49) 50-55(49)
[18] 25(49) 26-33(53) 34-39(49) 51-55(49)
[19] 25-27(49) 28-35(53) 36-39(49) 51-55(49)
[20] 25-30(49) 31-37(53) 38-39(49) 51-55(49)
[21] 25-32(49) 33-39(53) 40(52) 51-55(49)
[22] 15(49) 27-34(49) 35-39(53) 40-42(52) 51-55(49)
[23] 28-37(49) 38-40(53) 41-45(52) 50-55(49)
[24] 29-39(49) 40-41(53) 42-47(52) 49-55(49)
[25] 2-8(49) 30-42(49) 43-49(53) 50-55(49)
[26] 2-8(49) 30-44(49) 45-52(53) 53-55(49)
[27] 2-8(49) 20(52) 31-46(49) 47-54(53) 55(49)
[28] 2-8(49) 20(52) 31-49(49) 50-55(53) 56-57(52)
[29] 2-8(49) 20(52) 31-51(49) 52-55(53) 56-59(52)
[30] 2-8(49) 20(52) 31-54(49) 55(53) 56-61(52)
[31] 2-8(49) 31-55(49) 57-64(52)
[32] 2-8(49) 31-55(49) 59-66(52)
[33] 2-8(49) 31-55(49) 62-69(52)
[34] 2-8(49) 30-55(49) 64-71(52)
[35] 2-8(49) 30-55(49) 67-70(52)
[36] 2-8(49) 69(52)
[37:38] 2-8(49) 72-75(50)
[39:40] 2-8(49) 71-75(50)
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