Enhance, Draw & Anchoring
1. The Enhance Section
The Brightness and Contrast checkbox and sliders are there to allow you to increase or decrease these settings accordingly. The checkboxes need to be ticked for the sliders to function and for the function to take effect.
The Swap Colour function is used to swap out one colour on the incoming document with another specified colour of your choice. An example in the screenshot below shows a rule that has been defined with a zone (the red box indicated by the arrow) in which the Swap Colour option has switched all occurrences of red to blue.
The Inverse function is used to temporarily or permanently eliminate all artefacts on the document except for those in the specified colour of your choice. An example of this could be to see if a coloured stamp is visible on the document.
The checkbox and slider controls work in a similar way to the Brightness and Contrast. Clicking on the colour boxes displays a dialog of standard colours to choose from, whereas the dropper button to the right of each colour box allows very precise selection of the colour to swap out using the scanned document itself. By clicking on the dropper and dragging it over the colour you wish to identify before releasing the mouse, it is possible to choose the exact colour you need. This works for both the colour to replace and with the colour to replace it with. The slider function controls the intensity of the colour swap and inverse function.
See the Post Processing Tab in the The Scan2x Concept section of this manual for details of why this might be useful.
The Black & White function applies an algorithm to the page, document or selected area in the rule to convert it to a binary or monochrome image. Please refer to the section above for more information on how this function can be used effectively.
The next five checkboxes enable you to apply various image filters that can help with specific document types. These are explained briefly below.
Unsharp Mask. The "unsharp" of the name derives from the fact that the technique uses a blurred, or "unsharp", negative image to create a mask of the original image. The unsharp mask is then combined with the positive (original) image, creating an image that is less blurry than the original. The resulting image, although clearer, may be a less accurate representation of the image's subject.
Edge Enhance. Edge enhancement is an image processing filter that enhances the edge contrast of an image in an attempt to improve its acutance (apparent sharpness).
The filter works by identifying sharp edge boundaries in the image, such as the edge between a subject and a background of a contrasting colour and increasing the image contrast in the area immediately around the edge. This has the effect of creating subtle bright and dark highlights on either side of any edges in the image, called overshoot and undershoot, leading the edge to look more defined.
Despeckle. Removal of positive and negative spots, smoothing edges.
Smooth. Runs image smoothing algorithms on the area of interest to remove random noise
Invert Colours. Inverts all colours within the zone.
2. The Draw Section
Text, Barcode, QRCode stamping. It is possible to overlay a scanned image with text, barcodes or QR codes. Content can be fixed or dynamic, based upon document metadata. This functionality can be used to endorse a scanned document with, for example, the date scanned and the username or ID of the person who scanned it. QR Code overlays have been used to mark each document with an encrypted reference for secure compliance or simply to help automate downstream processes for customers. Any document stamp created this way will appear in the defined zone as described above.
You can input information in the form Text, a Barcode or a QRCode on the document by checking the necessary checkbox and writing the information in the textbox.
One can adjust the size and change the colour of the Text, Barcode or QRCode from the Size measure button and the Colour picker button as seen in the screenshot above.
When the Barcode option is ticked, administrators can select which Barcode Type they would like to generate. Please note that not all barcode types can have an input value (such as '123' in the screenshot above).
You can input an image of your choice on the document from the option shown above by checking the Image checkbox.
The Transparency checkbox can be used to make the colour lighter of the Text, Barcode, QRCode or Image options mentioned above.
The Rotation measure button can be used to change the rotation of the Text, Barcode, QRCode or Image options mentioned above.
3. The Anchoring Section
As can be seen from the screenshot below, you can anchor your post-processing layer to Text, a Barcode or a QRCode on the document.
One can add a top and bottom anchor, and you can specify where those anchors will be on the document through the Search in dropdown.
You can also define which OCR Engine and language you would like to use for each layer from the OCR Engine dropdown and the OCR Language dropdown.