Task #4324 (closed)
Opened 13 years ago
Closed 13 years ago
JPEG2000 parameters testing
| Reported by: | cxallan | Owned by: | jburel |
|---|---|---|---|
| Priority: | minor | Milestone: | OMERO-Beta4.3 |
| Component: | General | Version: | n.a. |
| Keywords: | n.a. | Cc: | jamoore, jrswedlow, cxallan |
| Resources: | n.a. | Referenced By: | n.a. |
| References: | n.a. | Remaining Time: | 0.0d |
| Sprint: | 2011-03-24 (8) |
Description (last modified by jburel)
Investigate JPEG2000, writing and testing methods
Test various combination of parameters
e.g. EncodingType, compression quality etc
Change History (14)
comment:1 Changed 13 years ago by dzmacdonald
- Status changed from new to accepted
comment:2 Changed 13 years ago by dzmacdonald
- Owner dzmacdonald deleted
- Status changed from accepted to new
comment:3 Changed 13 years ago by jburel
- Sprint changed from 2011-02-24 (6) to 2011-03-10 (7)
comment:4 Changed 13 years ago by jburel
- Cc jburel added
Test for 512x512:
- compression of full image lossy/Lossless factor of 4 in size reduction i.e. 84KB / 320KB
- compression per plane (16 planes) lossy/Lossless: 16 KB / 2.7MB
comment:5 Changed 13 years ago by jburel
- Cc jmoore added; jburel removed
- Description modified (diff)
- Owner set to jburel
- Status changed from new to accepted
comment:6 Changed 13 years ago by jburel
- Description modified (diff)
- Remaining Time changed from 1.5 to 1
- Summary changed from JPEG2000 lossy compressed visualisation to JPEG2000 parameters testing
comment:7 Changed 13 years ago by jburel
- Description modified (diff)
testing parameters for creating jpeg 1.3MB image 1540x844:
progession Type
tile specified (256, 256) -> no tile specified
- res 1620ms ->1233ms
- layer (default): 1589ms -> 1231ms
- res-pos 1601 -> 1221ms
- pos-comp: 1591-> 1236
- comp-pos: 1609 -> 1309
use default progression type i.e. layer
- lossy: 1235
- lossless:1259
Compression quality
- 1f 1228 high quality image default
- 0.2 1260 high compression
Number of decomposition levels
- 5: 1275
- 10: 1275
- 12: 1382
- 15: 2035
- 18: 6873
- 19: 12373
- 20: Out of Memory Error
comment:8 Changed 13 years ago by jburel
- Remaining Time changed from 1 to 0
- Status changed from accepted to closed
comment:9 Changed 13 years ago by jburel
- Remaining Time changed from 0 to 0.25
- Status changed from closed to reopened
comment:10 Changed 13 years ago by jburel
Writing of jp2 from medium size files, default strategy i.e. read the file, and write using the JPEG2000 writer, write the bytes array in one go using Lossy compression
- file: /squig/team/jpeg2000/med/xxx.ome.tiff
- 16.6MB -> 11.5 jp2 time (on my machine) ~8.5s
- file: /squig/team/jpeg2000/med/xxx.mrc
- 16.5MB -> 11.5 jp2 time (on my machine) ~8s
- file: /squig/team/jpeg2000/med/xxx.jp2
- 16.6MB -> 11.5 jp2 time (on my machine) ~15s
comment:11 Changed 13 years ago by jburel
- Cc jrswedlow cxallan added
comment:12 Changed 13 years ago by jburel
For the large file (/squig/jpeg2000/large/xx.tif): same strategy read and attempt to save in on go.
- reading ~1.4s
- writing: no possible. I have increased considerably memory to test.
Testing other strategies
comment:13 Changed 13 years ago by jburel
- Sprint changed from 2011-03-10 (7) to 2011-03-24 (8)
Referencing ticket #4432 has changed sprint.
comment:14 Changed 13 years ago by jburel
- Remaining Time changed from 0.25 to 0
- Status changed from reopened to closed
Referencing ticket #4252 has changed sprint.