image-scanner

问题 I have to use the Canon 9000F scanner in a project. I am having some troubles with the TWAIN driver (see: Are memory issues common when scanning 2400 DPI pictures with TWAIN?), so I tried WIA as an alternative, but the built in scanning dialog only allows a maximum resolution of 600 DPI, but I know that at least 1200 DPI should be possible. Is it possible to override these values? Where do the limitations come from? Is this caused by the driver or is this configured somewhere in WIA itself?

问题 I'm scanning a lot of A3 documents using a standard Brother A3 Multifunction and then use FineReader Pro for OCR'ing the images. However, I'm getting a lot of errors in the characters recognized, and lots of non-alphanumeric strange characters. Can someone give me any tips for programmatically improving the OCR accuracy, either pre-processing on the scanned images, or post-processing on the recognized text? Edit: Find a sample pdf. It includes some sample images from which I get the poorest

问题 I'm scanning a lot of A3 documents using a standard Brother A3 Multifunction and then use FineReader Pro for OCR'ing the images. However, I'm getting a lot of errors in the characters recognized, and lots of non-alphanumeric strange characters. Can someone give me any tips for programmatically improving the OCR accuracy, either pre-processing on the scanned images, or post-processing on the recognized text? Edit: Find a sample pdf. It includes some sample images from which I get the poorest

问题 I'm using Delphitwain (delphitwain.sourceforge.net) to add scan functionality to my app. Everything was fine, when i click scan button on my app it will show scan mode with scanner's Properties such as Page Size, Scanning Side (canon dr-3010c) and there is a Scan button and Cancel button. If i click cancel of course all the properties back to it's value before. How can I show this Scanner's Properties only to change properties without Scan, since i can do scan without showing properties Twain

问题 Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 3 years ago . I'm working on building an app to scan directly from TWAIN scanner to a Java applet. I'm already aware of Morena and JTwain, but they cost money. I need free. I could re-invent the wheel with JNI, but it seems like someone has probably already done this as a FOSS tool. Is anyone familiar with a free tool that

问题 It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. For help clarifying this question so that it can be reopened, visit the help center. Closed 7 years ago . I need to write a very simple application in Java to run a document scanner from a web page. I understand that this must be done with the help of TWAIN, but I do not know how. Can someone guide me towards how to

问题 I'm hoping someone has come across this - I'm trying to capture images from a document scanner using WIA, however on random machines when attempting to transfer the image result - WIA reports "The file exists. - HRESULT: 0x80070050)". On All machines with this issue, initial use of the software was successful. I am able to connect successfully to the scanner, query for Name, Manufacturer,etc. I've determined that i can successfully scan an image, if i run the code under an alternative user

问题 I want to use imagescanner module . I work with Python 3.4 . When I try this command in cmd : pip install imagescanner , I have got a message as you see in the picture : so what is the problem? 回答1: Go to this website (link) Download ( imagescanner-0.9.tar.gz (md5) ) Extract the fails open CMD write "cd C:\Users\User\Downloads\imagescanner-0.9\" write "setup.py install" Wait until the installation complete Close CMD now you can use the module ;) 来源： https://stackoverflow.com/questions

问题 Our application presently uses the Motorola/Symbol DS6707 Digital Image Scanner for both image capture and barcode scanning. We communicate with the scanner via the Moto SNAPI driver. Since this is specific to the Motorola/Symbol scanner, I am considering a rewrite using a more generic interface, such as OPOS. This is in a C/C++ application. We also have a Honeywell imaging scanner in house that we are testing with. This model (Xenon 1900) also an supports both imaging and the barcode

问题 I have purchased a simple biometric fingerprint reader that is usually used for laptop security through a USB connection. It is just called biomentric finger print reader, not branded! It came with the software for creating security for laptop, and it works great. However, I had a different idea for it: I am intending to create a database of users fingerprints so that I can identify which user swiped their fingers on it, ie, to use it for different users' authentication using fingerprints . I