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- March 17, 2014 at 4:17 am in reply to: TWAIN Scanning 2008 R2 Server/Desktop Experience INSTALLED #25911
I have beening working on TWAIN scanning program for a few month, and I have to say it is more complex that I have imagined. I prorgam my TWAIN application in two main parts, one is the core techniques of TWAIN objects acquiring, such as acquiring image to file, and converting acqured image to other image forms, and the other part mainly focuses on TWAIN device contols developing, which is the harder one.
Yes, you may check out whether your Twain or OCR reader support for ROI, which means selecting and scanning a part of the source image or document page. And generally speaking, an ocr scanning tool can fast, accurately extract text from scanned documents, convert images to text-searchable formats such as PDF, PDF/A, DOC, DOCX, XML, and XPS. Besides, it can recognize text from over 40 languages and character sets including English, Spanish, French, German, Russian, Japanese, Chinese, Arabic* and more
We usually use a TWAIN scanner to achieve various TWAIN image scanning functions before we can apply OCR reader to extract and decode text from image or document file, such as image acquisition using twain and adjusting and resetting twain device controls. After twain scanning, we use OCR recognition to finish batch recognizing and processing large volume images and documents.
TWAIN scanner is an industrial standard that was defined by the TWAIN Working Group. It includes the specification, data source manager and sample code. TWAIN links applications and image acquisition devices (such as photo scanners and digital cameras). The supportable acquired image of TWAIN scanner can be in various form, inlcuding jpg. For scanning and decoing different image format, we neen to do some modification on twain scanning console properties.
I think it is yes. It is possibale to get the compressed image data from scanner using twain, because a TWAIN application can detect & define image compression modes, frame sizes, resolutions. Besides, the compressed image’s data can be saved to image or document file if the TWAIN tool supports further scanned data processing and reading.
Twain scanner is not only can be installed on 32 bit binaries and 64 bit binaries windows operating system, but also can be implemented within the HTML document image viewer on web application, inclduing single page scanning and batch scan as well as both front and back of page using duplex scanning. The Twain scanning progress is some like the WinForms Twain scanning.
Here is an image processing library with TWAIN application avaliable acting as a important part of an image add-on. It is 100% written in visual c# language, containing almost widely used image processing functions, like image rotating, image filpping in vertial and horizontal direction, image cropping, image scaling in automatic or manual ratio and image thumbnail and watermark creations.
A mature and robust ISIS scanning application should be compatible with the latest ISO standard and support for direct in-memory scanning and direct in-memory scanning. What’s more, with the implemantation of an image processing add-on, advanced image processing and clean-up functions are provided, like deskew, binarize, despeckle.
December 18, 2013 at 2:43 am in reply to: Scanned images have same size in file transfer mode #25862Implment a mature TWAIN scanning add-on which is developed to capture digital images with a TWAIN (32 and 64 bit) device driver, including digital camera, scanners, and more. During the scanning, it is very easy to detect & define image compression modes, frame sizes, resolutions, etc.
I also program barcod reader and seperator in TWAIN applications by using C# language, which can be installed within both Windows C# applicationa and web C# asp.net application. And, by the way, this is the corresponding image barcode creator in C# TWAIN applications.
December 2, 2013 at 2:49 am in reply to: Using Twain for my own scanning and barcode recognition app. #23206Barcod recognitiaon app can be seamlessly integrated with image document managing system to create an image barcode reading toolkit which can detect and decode any target linear or 2d barcode from image or document page in high performance.
November 28, 2013 at 8:20 am in reply to: Question- how to extract barcode data from twain Application #25594How about implementing a barcode reading tool into the twain application and then you can apply the barcode scanner to decode any linear or 2d barcode from the twain application.
See this image converting libarary in .net platforms which enables users to render image to pdf directly with image to document converting methods. You are free to convert and save image to single-page or multi-page pdf document.
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