47 lines
2.8 KiB
Plaintext
47 lines
2.8 KiB
Plaintext
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Initialization
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--------------
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Download the source images into the /original directory from http://www.openjpeg.org/OPJ_Validate_OriginalImages.7z
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Usage
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-----
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Usage: OPJ_Validate batch_text_file bin_directory
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Example: OPJ_Validate OPJ_Param_File_v0_1.txt v1.1.a
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where OPJ_Param_File_v0_1.txt is a file containing a list of compression and decompression parameters
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and v1.1.a is a directory inside the directory OPJ_Binaries containing the openjpeg executables (j2k_to_image.exe and image_to_j2k.exe)
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Example with batch file: You consider revision 490 (/rev490) as stable, and would like to compare it a new version, revision 493 (rev493).
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Batch mode
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1) Calculate the reference by running the "OPJ_Validate_Create_Ref rev490" file (.sh or .bat depending on your os)
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2) Compare the candidate revision with ther reference by running the "OPJ_Validate_Candidate_vs_Ref rev493" file
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3) The results of the comparison are given at the end of the processing. They are also available in the bin directory OPJ_Binaries/rev493/report.txt
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Manual mode
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1) Put the j2k_to_image.exe and image_to_j2k.exe binaries of both revisions in the OPJ_Binaries directory (OPJ_Binaries/rev490 and OPJ_Binaries/rev493)
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2) Start by initializing the validation with revision 490.
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a) Modify OPJ_Validate_init.bat and set the last line to "OPJ_Validate.exe OPJ_Param_File_v0_1.txt rev490"
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b) Execute OPJ_Validate_init.bat
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3) Compare the reference files generated in the previous step with files generated with revision 493
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a) Modify OPJ_Validate_run.bat and set the last line to "OPJ_Validate.exe OPJ_Param_File_v0_1.txt rev493"
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b) Execute OPJ_Validate_run.bat
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4) Read the results in the binaries directory of revision 493 (OPJ_Binaries/rev493/report.txt)
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Search for the word "ERROR:" in that file.
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If this word is not present in the report, this means that both codecs of rev490 and rev493 gave the same results.
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Otherwise, it means that for certain encoding/decoding parameters, the codecs behave differently.
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Example of error
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Task 17
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MD5 file: temp/A_4_2K_24_185_CBR_WB_000.tif.md5
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Command line: "OPJ_Binaries/rev473/j2k_to_image.exe -i original/A_4_2K_24_185_CBR_WB_000.j2k -o temp/A_4_2K_24_185_CBR_WB_000.tif "
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ERROR: temp/tempmd5.txt and temp/A_4_2K_24_185_CBR_WB_000.tif.md5 are different.
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The codec seems to behave differently.
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This means that the rev490 and rev493 created two different versions of file A_4_2K_24_185_CBR_WB_000.tif with the command line given above.
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An error might have been caused by switching to this new revision.
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Warning: Do not take the last line of the report.txt file into account ( Cool. All files passed the tests !) as it is a bug. Search for the word "ERROR:" to detect potential errors.
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5) If no error is detected, you can commit the changes to the OpenJPEG repository
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