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Subtract the X/Y offsets when decoding refinement regions of JBIG2 images (issue 7145, 7308, 7401, 7850, 8270)

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Please refer to the JBIG2 standard, see https://www.itu.int/rec/dologin_pub.asp?lang=e&id=T-REC-T.88-200002-I!!PDF-E&type=items.
In particular, section "6.3.5.3 Fixed templates and adaptive templates" mentions that the offsets should be *subtracted*; where the offsets are defined according to "Table 6" under section "6.3.2 Input parameters".

Fixes 7145.
Fixes 7308.
Fixes 7401.
Fixes 7850.
Fixes 8270.
This commit is contained in:
Jani Pehkonen 2017-04-26 15:47:59 +02:00 • committed by Jonas Jenwald
parent 366277d180
commit 64deb6c700
3 changed files with 10 additions and 2 deletions
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1
test/pdfs/issue7308.pdf.link Normal file
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@ -0,0 +1 @@
https://github.com/mozilla/pdf.js/files/256692/ZGTA198001028.pdf

7
test/test_manifest.json
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@ -2322,6 +2322,13 @@
"link": true,
"type": "eq"
},
{ "id": "issue7308",
"file": "pdfs/issue7308.pdf",
"md5": "ba2e23d3af93ac2c634d77ccbe2e79d5",
"rounds": 1,
"link": true,
"type": "eq"
},
{ "id": "issue1597",
"file": "pdfs/issue1597.pdf",
"md5": "a5ebef467fd6e2fc0aeb56c9eb725ae3",