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TIFF and LibTiff Mail List Archive

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2004.12.11 02:06 "[Tiff] TIFF Pyramid", by Eric VERGNAUD
2004.12.11 15:35 "Re: [Tiff] TIFF Pyramid", by Bob Friesenhahn
2004.12.12 11:53 "Re: [Tiff] TIFF Pyramid", by Eric VERGNAUD
2004.12.12 16:57 "Re: [Tiff] TIFF Pyramid", by Bob Friesenhahn
2004.12.12 19:06 "Re: [Tiff] TIFF Pyramid", by Eric VERGNAUD
2004.12.13 15:07 "RE: [Tiff] TIFF Pyramid", by Grissom, Ed
2004.12.13 15:16 "Re: [Tiff] TIFF Pyramid", by Eric VERGNAUD
2004.12.14 20:30 "Re: [Tiff] TIFF Pyramid", by Andrey Kiselev
2004.12.13 15:16 "RE: [Tiff] TIFF Pyramid", by Grissom, Ed
2004.12.11 17:41 "Re: [Tiff] TIFF Pyramid", by Joris
2004.12.12 11:56 "Re: [Tiff] TIFF Pyramid", by Eric VERGNAUD

2004.12.12 11:56 "Re: [Tiff] TIFF Pyramid", by Eric VERGNAUD

le 11/12/04 18:41, Joris à joris.at.lebbeke@skynet.be a écrit :

> Eric,
>

Is there a sample on how to write tiff pyramid. I'm not 100% sure on how to create and save the subifds.

I've build such a tile pyramid TIFF with Photoshop 7.0, and this is what that got me:

Page 0 at offset 8

   + SubIFDs 0 at offset 6432380
   + SubIFDs 1 at offset 7331432
   + SubIFDs 2 at offset 7485948
   + Exif IFD 0 at offset 6432336

Page 0 at offset 8
NewSubfileType, 1 LONG: -
ImageWidth, 1 SHORT: 6000
ImageLength, 1 SHORT: 4003
BitsPerSample, 3 SHORT: 8, 8, 8

Compression, 1 SHORT: JPEG ('new-style' JPEG) PhotometricInterpretation, 1 SHORT: YCbCr StripOffsets, 1335 LONG: 34220, 39056, 44068, 49084, 54100, 59258,... SamplesPerPixel, 1 SHORT: 3

RowsPerStrip, 1 SHORT: 3
StripByteCounts, 1335 LONG: 4836, 5012, 5015, 5016, 5158, 5054,...
XResolution, 1 RATIONAL: 305
YResolution, 1 RATIONAL: 305
PlanarConfiguration, 1 SHORT: Chunky format
ResolutionUnit, 1 SHORT: Inch
Software, 20 ASCII: "Adobe Photoshop 7.0"
DateTime, 20 ASCII: "2004:12:11 18:03:21"
SubIFDs, 1 IFD: 6432380

JPEGTables, 459 UNDEFINED: 255, 216, 255, 219, 0, 132, 0, 16, 11,... XMP, 4649 BYTE: "<?xpacket begin=' ' id='W5M0MpCehiHzreSzNTczkc9d... Photoshop, 18102 BYTE: 56, 66, 73, 77, 4, 37, 0, 0, 0, 0, 0, 16, 0,... Exif IFD, 1 LONG: 6432336

SubIFDs 0 at offset 6432380
NewSubfileType, 1 LONG: Reduced-resolution version
ImageWidth, 1 SHORT: 3000
ImageLength, 1 SHORT: 2002
BitsPerSample, 3 SHORT: 8, 8, 8

Compression, 1 SHORT: JPEG ('new-style' JPEG) PhotometricInterpretation, 1 SHORT: YCbCr StripOffsets, 286 LONG: 6435336, 6438382, 6441464, 6444610,... SamplesPerPixel, 1 SHORT: 3

RowsPerStrip, 1 SHORT: 7
StripByteCounts, 286 LONG: 3046, 3081, 3145, 3108, 3233, 3227,...
XResolution, 1 RATIONAL: 152,5
YResolution, 1 RATIONAL: 152,5
PlanarConfiguration, 1 SHORT: Chunky format
ResolutionUnit, 1 SHORT: Inch

JPEGTables, 459 UNDEFINED: 255, 216, 255, 219, 0, 132, 0, 16, 11,...

SubIFDs 1 at offset 7331432
NewSubfileType, 1 LONG: Reduced-resolution version
ImageWidth, 1 SHORT: 1500
ImageLength, 1 SHORT: 1001
BitsPerSample, 3 SHORT: 8, 8, 8

Compression, 1 SHORT: JPEG ('new-style' JPEG) PhotometricInterpretation, 1 SHORT: YCbCr StripOffsets, 72 LONG: 7332676, 7334308, 7336024, 7337828, 7339494,... SamplesPerPixel, 1 SHORT: 3

RowsPerStrip, 1 SHORT: 14

StripByteCounts, 72 LONG: 1632, 1715, 1803, 1665, 1649, 1627, 2054,... XResolution, 1 RATIONAL: 76,25

YResolution, 1 RATIONAL: 76,25
PlanarConfiguration, 1 SHORT: Chunky format
ResolutionUnit, 1 SHORT: Inch

JPEGTables, 459 UNDEFINED: 255, 216, 255, 219, 0, 132, 0, 16, 11,...

SubIFDs 2 at offset 7485948
NewSubfileType, 1 LONG: Reduced-resolution version
ImageWidth, 1 SHORT: 750
ImageLength, 1 SHORT: 501
BitsPerSample, 3 SHORT: 8, 8, 8

Compression, 1 SHORT: JPEG ('new-style' JPEG) PhotometricInterpretation, 1 SHORT: YCbCr StripOffsets, 18 LONG: 7486760, 7489102, 7491628, 7494930, 7498102,... SamplesPerPixel, 1 SHORT: 3

RowsPerStrip, 1 SHORT: 29

StripByteCounts, 18 LONG: 2341, 2525, 3302, 3171, 3588, 3985, 3871,... XResolution, 1 RATIONAL: 38,125

YResolution, 1 RATIONAL: 38,125
PlanarConfiguration, 1 SHORT: Chunky format
ResolutionUnit, 1 SHORT: Inch

JPEGTables, 459 UNDEFINED: 255, 216, 255, 219, 0, 132, 0, 16, 11,...

Exif IFD 0 at offset 6432336
ColorSpace, 1 SHORT: Uncalibrated
PixelXDimension, 1 LONG: 6000
PixelYDimension, 1 LONG: 4003

In my opinion, that is completely in accordance with the specification supplement that describes the SubIFDs tag. All differently sized versions are part of the single main IFD, either the main image in that IFD, or the image in a SubIFD of that IFD. That should indicate to a reader that this is all really

> the same image. The NewSubfileType tag is used as an extra indication of th