Scanning / TWAIN components: Difference between revisions
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New page: === Scanning / TWAIN components === I've just spend a couple of days evaluating scanning ActiveX objects and here are my summary notes; The requirements were: - Scanning fully controllab... |
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=== Scanning / TWAIN components === | === Scanning / TWAIN components === | ||
Here are the summary notes of Marco on evaluating using ActiveX objects for scanning; | |||
The requirements were: | The requirements were: | ||
* Scanning fully controllable from VDF, no sticking progress windows etc. | |||
* Save as a small compressed PDF 300dpi B/W | |||
[http://www.viscomsoft.com/products/scanner/ Viscom Scanner] | [http://www.viscomsoft.com/products/scanner/ Viscom Scanner] | ||
- PDF has no compression so large files | - PDF has no compression so large files | ||
- Constants were not enumerated in generated class | - Constants were not enumerated in generated class | ||
- TWAIN window cannot be closed by VDF, so user must press cancel on 'foreign' dialog on completion | - TWAIN window cannot be closed by VDF, so user must press cancel on 'foreign' dialog on completion | ||
+ Cheap | + Cheap | ||
[http://www.adobe.com Acrobat 8 Automation] | [http://www.adobe.com Acrobat 8 Automation] | ||
+ Best compression | + Best compression | ||
+ Also does background OCR and makes PDF searchable (the text highlites the corresponding bitmap text) | + Also does background OCR and makes PDF searchable (the text highlites the corresponding bitmap text) | ||
+ Nice continue dialog when Automatic document feeder runs out of paper | + Nice continue dialog when Automatic document feeder runs out of paper | ||
- Automation is NOT provided for scanning... | - Automation is NOT provided for scanning... | ||
- Expensive | - Expensive | ||
[http://www.gdpicture.com/products/gdtwain-pro-ocx-twain-activex-control.php GdTwain Pro] | [http://www.gdpicture.com/products/gdtwain-pro-ocx-twain-activex-control.php GdTwain Pro] | ||
+ Small PDF | + Small PDF | ||
± Lots and lots of functionality; a bit daunting | ± Lots and lots of functionality; a bit daunting | ||
[http://www.dynamsoft.com/Products/WebTWAIN_Overview.aspx DynamicWebTwain] | [http://www.dynamsoft.com/Products/WebTWAIN_Overview.aspx DynamicWebTwain] | ||
+ Very small PDF | + Very small PDF | ||
+ Several good simple examples, in easy to understand VB.Net | + Several good simple examples, in easy to understand VB.Net | ||
+ Good enumerated values | + Good enumerated values | ||
+ Personal email is send soon after download if you require support | + Personal email is send soon after download if you require support | ||
+ Only Developer edition required. Fee distribution for Desktop applications | + Only Developer edition required. Fee distribution for Desktop applications | ||
So, perhaps needless to say, we chosen for Dynamic Web Twain. | So, perhaps needless to say, we chosen for Dynamic Web Twain. | ||
==== External links | ==== External links ==== | ||
*[http://www.sture.dk/wasp/articledisplay.asp?RecId=186926 Scanning / TWAIN components] | *[http://www.sture.dk/wasp/articledisplay.asp?RecId=186926 Scanning / TWAIN components] | ||
[[Category:ActiveX]] | |||
Latest revision as of 13:24, 24 June 2020
Scanning / TWAIN components
Here are the summary notes of Marco on evaluating using ActiveX objects for scanning;
The requirements were:
- Scanning fully controllable from VDF, no sticking progress windows etc.
- Save as a small compressed PDF 300dpi B/W
- PDF has no compression so large files - Constants were not enumerated in generated class - TWAIN window cannot be closed by VDF, so user must press cancel on 'foreign' dialog on completion + Cheap
+ Best compression + Also does background OCR and makes PDF searchable (the text highlites the corresponding bitmap text) + Nice continue dialog when Automatic document feeder runs out of paper - Automation is NOT provided for scanning... - Expensive
+ Small PDF ± Lots and lots of functionality; a bit daunting
+ Very small PDF + Several good simple examples, in easy to understand VB.Net + Good enumerated values + Personal email is send soon after download if you require support + Only Developer edition required. Fee distribution for Desktop applications
So, perhaps needless to say, we chosen for Dynamic Web Twain.
