convert response from PDF Extract API to image and csv files

[AdiManav]

Hello All,

I am using the PDF Extract API by making a REST call using postman. The call is successful and i am able to Poll and get the contentAnalyserResponse in text format. How do i get this as separate files that can get downloaded to my disk as images and/or csv/json files for text and tables. Can i receive the response as object(s) that can be written to different files with the proper extensions to achieve this. I remember reading somewhere but now cannot locate it again that the response can be received as a single downloadable zip file with all the separate files in a fixed folder structure...

If anyone has tried or achieved this, please could you share how you have done it.

Thanks and regards,

Adi

[Raymond Camden]

It should be a multipart form response. I haven't done that myself with Postman, but does that give you some help?

[rollinh69258361]

Hi, 

I'm at the same spot right now and could use some guidance.

From looking at the json, it appears that I'm getting good results, but now I need to get it displayed properly. 

I'm beginning to think that I'm unable to render the response in postman and need to install the sdk to visualize the extraction. I'm hoping to send the GET responses directly into a db to display on website.

Any input on next steps would be greatly appreciated.

[Raymond Camden]

If you are getting the JSON, then you are good - I mean, as far as I can help. How you use the JSON depends on what your building. But at that point, it's outside the API/SDK and in your hands in terms of what you do with the JSON. Right?

[rollinh69258361]

Thanks for the response!

I suspect I'm missing something simple.

I'm getting alot of black triangles with white question marks. 

A character encoding issue? My source PDF is in Icelandic btw. It seems that alot of the response code is usable and correct, but I don't know how to get around this... 

Short example below

"cpf:outputs":{"elementsRenditions":[{"cpf:location":"fileoutpart0","dc:format":"application/vnd.openxmlformats-officedocument.spreadsheetml.sheet"},{"cpf:location":"fileoutpart1","dc:format":"image/png"}],"elementsInfo":{"cpf:location":"jsonoutput","dc:format":"application/json"}}}
--Boundary_86985_669621865_1628280852738
Content-Type: application/octet-stream
Content-Disposition: form-data; name="fileoutpart1"

�PNG


IHDRLQA��IDATx����q�غ`|�$ "�%� �
B�C�Dh�c9���:
�N�ɀ[e�U���oo��g��-bi�������~?~�����
�@`�@`�@`�@`�@`�@`�@`�@`�@`�@`��9�4M����?���-��opw�t߳�������y>���8�� �,���_������nW�p�e:��ax�=�]�X,:�?�$I�8��q~;u���G`������e�E�v��se���������t�Z�� ���d����2���jտ������y��y�W�#�8��0�N�?��砎}?7ے�g���lF�Qw/�e����zh�m4���*��y��J�t8�f��bQO��>��^__�4=�w��h4zi��f'w��٬���d�|�ͥ7=[����vY�Mz��r��7iv6�]ܽ��p����	�:�	��k�(������s��n�'������j�:��������W�������g�hd<w�M����i�����kl�:�~-_�	�}r����$ɳ~Gx\���s��J�הS��m��d�<�[���k���ֽK��*������`B�T�K.����u�M͗7?ȕ���_˷��֮���b���j�
�A���A�}����ϓ'E�~�(��,+ɲ�9-=�����Zw��n���f>�o�ۃ�����؍�A�y>�L.@�����:��t��N9k1Dӕ/�&.;��+[.�ɵW��c���

[Raymond Camden]

Ah, so Extract can return the images in the PDF (along with tabular data too), so I think you are seeing Postman maybe fail to try to render that. Normally you would take the multipart form response and save out the binary files and the JSON. The SDK does all of this for and makes it much easier, so if you *do* have access to that, I'd suggest it.

[defaultoj68i2q8x3ml]

Hi Raymond,

Normally you would take the multipart form response and save out the binary files and the JSON. The SDK does all of this for and makes it much easier - In the SDK, there is no such option for .Net, then we we can save out the binary files & JSON using REST API?

[Test Screen Name]

Did you look for a MIME solution for decoding MIME multipart data in .NET? The REST API is delivering the data, all you need to do is decode it.

[defaultoj68i2q8x3ml]

Hi Raymond,

Thanks for your update, Now i am able to decode the MIMe multipart data and save the files. I have a quick question. Currently i am using the below mentioned "contentAnalyzerRequests" :

{
"cpf:engine": {
"repo:assetId": "urn:aaid:cpf:58af6e2c-1f0c-400d-9188-078000185695"
},
"cpf:inputs": {
"documentIn": {
"cpf:location": "InputFile0",
"dc:format": "application/pdf"
},
"params": {
"cpf:inline": {
"elementsToExtract": ["text", "tables"],
"renditionsToExtract": [ "tables", "figures"],
"tableOutputFormat": "csv"
}
}
},
"cpf:outputs": {
"elementsInfo": {
"cpf:location": "jsonoutput",
"dc:format": "application/json"
},
"elementsRenditions": {
"cpf:location": "fileoutpart",
"dc:format": "text/directory"
}
}
}

When i am decoding the files, i am getting as individual files instead of zip files. What are changes i have to do to get zip file in contentAnalyzerRequests.

[Raymond Camden]

I believe we return a zip with the SDK and with the REST API  you have the data as is - individual files. I'm more familiar with the SDKs but I'm mostly sure I'm right. If for some reason you *want* a zip file, like you want to move the results elsewhere, you could zip it after the operation.

[defaultoj68i2q8x3ml]

Hi Raymond,

Thanks for the update.

[Test Screen Name]

The embedded data is clearly a PNG (says so on the first line). A MIME extractor should be used to get out the separate parts. I have no idea what would be in the PNG.