6.0

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:

z Select the Despeckle image item in the Image menu.

To despeckle a particular block:

z 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:

z 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 automati

cally 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:

z Click the button or select the

Rotate Clockwise item in the Image

menu to rotate the image 90° clockwise.

z Click the button or select the

Rotate CounterClockwise item in the

Image menu to rotate the image 90° counterclockwise.

z Select the

Rotate Upside Down item in the Image menu to rotate the

image 180°.

Chapter 4. Acquiring the Image