PDFA interpolate key problem

Aspose.PDF Product Family
1

We have problem with Aspose PDF for Java (version 20.6)
Whenever a PDF document with specific images is converted to PDFA format, we get an ‘interpolate key for image not false’ error on PDFA-1b validation of converted file.
Validation is made with Adobe Acrobat. If we make this same PDFA-1b validation already on original PDF file (although it is not yet PDFA), we already have this ‘interpolate key’ error.
So it seems that images in source file are in ‘interpolate key = true’ format, but conversion to PDFA format does not set this ‘interpolate key’ property to false, which is requirement for compatible PDFA-1b document.
PdfCreator for instance, does not seem to have this problem since he sets the interpolate keys on images to off during conversion to PDFA. I think Aspose should also.

Error in ConversionLog are similar to:
<Problem Severity="Error" Clause="6.2.4" ObjectID="31" Convertable="True">The image interpolation is prohibited</Problem>

2

@gjera

Would you kindly share your sample PDF document and code snippet that you are using at your side. We will test the scenario in our environment and address it accordingly.

3

Here you have PDF input document and PDFA output document.
input.pdf (577.6 KB)
output.pdf (594.7 KB)

Main Java code for conversion looks like:

> public void convertToPdfA(FileInfo inputFileInfo, FileInfo outputFileInfo) {
    com.aspose.pdf.Document document = new com.aspose.pdf.Document(inputFileInfo.getFilename());
           PdfFormatConversionOptions conversionOptions = new PdfFormatConversionOptions(com.aspose.pdf.PdfFormat.PDF_A_1B, com.aspose.pdf.ConvertErrorAction.Delete);
           document.convert(conversionOptions);
           document.save(outputFileInfo.getFilename());
       }

We also tried with validation, before conversion (as described here - https://docs.aspose.com/display/pdfjava/Convert+PDF+to+other+Formats) but it makes no difference.

Br,
Gregor

PS: Your API documentation also doesn’t work as it should. On site Aspose.PDF for Java | Aspose API References every reference to class with parent-child connection doesn’t work.
E.g:
TextReplaceOptions.ReplaceAdjustment
https://reference.aspose.com/error/404?path=pdf/java/com.aspose.pdf/TextReplaceOptions_ReplaceAdjustment

TextReplaceOptions.Scope
https://reference.aspose.com/error/404?path=pdf/java/com.aspose.pdf/TextReplaceOptions_Scope

TiffSettings.IndexedConversionType
https://reference.aspose.com/error/404?path=pdf/java/com.aspose.pdf.devices/TiffSettings_IndexedConversionType

XImage.RawParameters
https://reference.aspose.com/error/404?path=pdf/java/com.aspose.pdf/XImage_RawParameters

4

@gjera

We have been able to observe the similar issue in our environment and logged it as PDFJAVA-39577 in our issue tracking system. We will further look into its details and keep you posted with the status of its correction. Please be patient and spare us some time.

We are sorry for the inconvenience.

PS: We are checking the issue regarding missing pages in API Reference section and will update you soon.

5

Please, are there any updates here?

6

@pdanner

We are afraid that earlier logged ticket is not yet fully investigated. We will be able to share some news on its ETA as soon as it is analyzed. We will let you know once we have some updates regarding its resolution. Please give us little time.

We are sorry for the inconvenience.