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Able Fax Tif View - Online Help

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Image Processing

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The Able Fax Tif View provides several features which allow users to manipulate and process image files.


Use the Tools menu items.



Text Recognition (OCR)

Languages for OCR: Arabic, Bulgarian, Catalan, Cherokee, Chinese Simplified, Chinese Traditional, Czech,

Danish, Dutch, English, Finnish, French, German, Greek, Hebrew, Hindi, Hungarian, Indonesian, Italian, Japanese,

Korean, Latvian, Lithuanian, Norwegian, Polish, Portuguese, Romanian, Russian, Serbian, Slovak, Slovenian, Spanish,

Swedish, Tagalog, Thai, Turkish, Ukrainian, Vietnamese ...

Batch mode for "Text Recognition" tool. Program allows to convert (OCR) many files at once.

Multipage Text Recognition (OCR)


Remove Noise

Remove Noise removes noise pixels using the Kfill algorithm.

The RemoveNoise command works only with black/white images (1bit).




Remove Isolated Pixels

Remove Isolated Pixels removes all groups of the Pixel Count isolated pixels.

The Remove Isolated Pixels command works only with black/white images (1bit).


Noise Color specifies the "text" color, 0 is black and 1 is white (for example if you have a document where the text is black Noise Color must be 0, otherwise it must be 1).




Remove Punch Holes

Automatically detects the location of punch holes on the image and removes them.




Deskewing estimates the orientation angle (in degrees) of the text lines and rotates the image using this angle.

Apply this command only to images that contains a printed text.


If there is a selected area, Deskewing works (estimates) only on this one.




Angle Range specifies the working range in degrees. Low values enhance performance and accuracy. For example specifying 30 Deskewing will scan the image searching for pixels inside a range of -15 to 15 degrees. Angle Range can be from 1 to 180.

Precision specifies the angle precision in degrees. It must be >0 and <=1 with only one decimal digit. Typical value is 0.1.

Edge Detect specifies if to apply and edge detect algorithm before detect the orientation.



Deskewing Fine estimates the orientation angle (in degrees) of the lines of text and rotates the current image.

Apply this method only to images that contains printed text.  Deskewing Fine use progressive rotations to find the best orientation.



Starting Angle specifies the starting angle, if you know it (0 otherwise)

Resolution is the angle increment (0.1 is good)

Range specifies the angle range (example 10, try from -5 to +5)

Max Quality : if not selected, create a thumbnail of the image and works on it.



Color Adjust ...

This command shows the image processing preview dialog.




Effects ...

This command executes the image effects preview dialog.



Negative action inverts all colors of the current image.


Convert (Color Depth Change)



Convert to 24Bit converts a black&white (1bit) image to true color (24bit).


Convert to Gray action converts image to gray levels.

Convert to Gray just set R,G,B channels to the same value.


Convert to BW Ordered converts a true color image (24 bit) to black & white (1 bit) with a dithering ordered method.


Convert to BW FloydSteinberg converts current image to black/white using Floyd-Steinberg algorithm.


Convert to BW Threshold converts a true color image (24 bit) to black & white (1 bit) using a thresholding algorithm.

The image is first converted to gray levels, then all levels that are less of Threshold will be set to black, otherwise will be set to white.



Convert to Black&White mode (using a various methods)




Add Margins ...




Set Transparent Colors ...








Canvas size


This method resizes the current image to Width and Height. The content of the image doesn't change (no stretch).

Position specifies the horizontal and vertical alignment of the old image.




Change Resolution




Crop gets as current image the specified rectangle, cutting off the remaining image.



Auto Crop removes the border with color like Background Color from the image borders.

The Tolerance specifies how much background color must be equal to actual pixel.

Auto allows to determine the background color automatically.



Auto Crop 2 automatically removes the border using a density analysis algorithm.

Border Rate is the difference between border and text.

This method works only when paper is white and text is black.




Auto Crop Line automatically removes the border by analyzing the color and the number of pixels (width) in rows and columns.

Analyzed color and Tolerance allows you to choose the base color and the nearest range of colors.

Color pixels (%) is number of pixels in the row (column) with selected color.

Number of lines is number of rows (or columns) that are consecutive and satisfy these conditions (border width).

Quality/Speed slider. You can choose between Quality and Speed.


The program analyzes each row and column.

Looks for pixels with a certain color (Analyzed color) or close to it (Tolerance).

If the number of pixels is more than necessary (Color pixels, %), the program counts this row or column.

When the required quantity is found (Number of lines), the program cuts them.





Original image and result.






Erase tools (toolbar)



Press the Eraser Tools button on the toolbar.

You can select a color, shape and size of the Eraser.

Use the Ctrl key to erase in a straight line.




Text tools (toolbar)



Press the Text button on the toolbar.

You can select a font, size, style and string of the Text.