6.0

Chapter 4 - Acquiring the Image

Working with the Image

● Despeckle image

● Invert image

● Rotate or flip image

● Clear block

● Increase/Decrease the image scale

● Get image information

● Print image

● Undo the last action

1. Despeckle image

The recognized image may have a large amount of "dust" present on it, i.e. a large number of excess

dots. The dots arise in the case of documents of medium-to-low print quality, and dots located close to

character outlines may have an adverse effect on recognition quality.

To decrease the number of dots:

● Select the Despeckle image item in the Image menu.

To despeckle a particular block:

● Select the Despeckle block item in the Image menu.

Note: If the original document is very faint or set in a very light font, despeckling the image may

cause periods, commas, and very thin character parts to disappear, decreasing recognition quality.

If you scan or open "dusty" images, select the

Despeckle image item in the Image Preprocessing

group on the Scan/Open Image tab (Tools>Options menu) to have images despeckled before the

application adds them to the batch.

2. Invert image

Some scanners invert images (turning black into white and vice versa) during scanning.

You may wish to apply the

Invert Image option to ensure that documents have a uniform or standard

appearance, e.g. a black font against a white background. To do this:

● Select the Invert Image item in the Image menu.

Note: If you scan or open inverted images, select the Invert image item in the Image Preprocessing

group on the Scan/Open Image tab (Tools>Options menu) before adding these images to the batch.

3. Rotate or Flip image

Recognition quality depends greatly on an image having a standard orientation (the text should be read

from top to bottom and all lines should be horizontal). By default FineReader automatically detects

page orientation during the recognition stage. If FineReader detects page orientation incorrectly, clear

the

Detect image orientation (during recognition) item on the Scan/Open Image tab and rotate the

image manually so that it has a standard orientation:

● Click the button or select the Rotate Clockwise item in the Image menu to rotate the

image 90° clockwise.

● Click the button or select the Rotate Counter-Clockwise item in the Image menu to

rotate the image 90° counter-clockwise.

● Select the Rotate Upside Down item in the Image menu to rotate the image 180°.