Details
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Type:
Bug
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Status: Closed
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Priority:
Major
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Resolution: Fixed
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Affects Version/s: 5.0.6_P01
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Fix Version/s: 5.0.7
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Component/s: Core/Parsing
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Labels:None
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Environment:any
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Support Case References:
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Workaround Exists:Yes
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Workaround Description:use org.icepdf.core.cmyk.disableICCProfile=true to improve performance
Description
A client has sent in a PDF that has a medium sized image (2496x3216) and corresponding image mask. The images however use a n ICC color profile which has very expensive colour look ups.
When working with ICC color profiles for CMYK pallets I found that the Java Implementation was too slow for doing image lookups. I think it's time to revisit this issue both for ICCBase and DeviceCMYK colour spaces. There is a good chance we could create a local lookup cache that would improve performance as well as getting better colour accuracy.
When working with ICC color profiles for CMYK pallets I found that the Java Implementation was too slow for doing image lookups. I think it's time to revisit this issue both for ICCBase and DeviceCMYK colour spaces. There is a good chance we could create a local lookup cache that would improve performance as well as getting better colour accuracy.
Activity
| Field | Original Value | New Value |
|---|---|---|
| Fix Version/s | 5.0.7 [ 11470 ] |
| Support Case References |
Support Case #12899 - https://icesoft.my.salesforce.com/5007000000dDkSK
Support Case #12805 - https://icesoft.my.salesforce.com/5007000000duevw |
| Workaround Description | use org.icepdf.core.cmyk.disableICCProfile=true to improve performance | |
| Workaround Exists | Yes [ 10007 ] |
| Fix Version/s | 5.1 [ 10675 ] | |
| Fix Version/s | 5.0.7 [ 11470 ] |
| Repository | Revision | Date | User | Message |
| ICEsoft Public SVN Repository | #42058 | Fri Aug 01 07:15:56 MDT 2014 | patrick.corless | |
| Files Changed | ||||
MODIFY
/icepdf/branches/icepdf-5.0.1/icepdf/core/src/org/icepdf/core/pobjects/graphics/DeviceCMYK.java
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| Status | Open [ 1 ] | Resolved [ 5 ] |
| Fix Version/s | 5.0.7 [ 11470 ] | |
| Fix Version/s | 5.1 [ 10675 ] | |
| Resolution | Fixed [ 1 ] |
| Repository | Revision | Date | User | Message |
| ICEsoft Public SVN Repository | #42061 | Fri Aug 01 09:51:51 MDT 2014 | patrick.corless | |
| Files Changed | ||||
|
MODIFY
/icepdf/branches/icepdf-5.0.1/icepdf/core/src/org/icepdf/core/pobjects/graphics/ImagePool.java
MODIFY
/icepdf/branches/icepdf-5.0.1/icepdf/core/src/org/icepdf/core/pobjects/graphics/DeviceCMYK.java
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| Status | Resolved [ 5 ] | Closed [ 6 ] |
Added a HashMap based cache for previously looked up ICC color values. The key generation is a bit rudimentary but is adequate for now as the result is a significant speed up when using the ICC profiles for CMYK.