ScanFix Xpress Form Set Properties within the Properties View

These properties allow you to set the image operations for all forms that are processed against the selected form set. Not all operations are designed for use at all bit depths. Some operations are designed to work only on bitonal images and some only on color/grayscale images. While, some operations work with any bit depths. The ScanFix Xpress help document will include this detailed information.

You can use the Validate button in FormAssist to verify that the selected operation(s) and order of operations are valid for the bit depth of the image being processed.

The available image operations are:

• Adjust brightness contrast
• Auto binarize
• Auto image detergent
• Binarize
• Blob removal
• Border removal
• Color drop
• Comb removal
• Deskew
• Despeckle
• Dilate
• Dot shading removal
• Erode
• Inverse text correction
• Line removal
• Smoothing

 

Adjust Brightness Contrast

Check this image operation to adjust the brightness contrast on an image.

Adjust Brightness Contrast Properties

 

Field	Description
Adjustment	The type of contrast adjustment to perform on the image.
Contrast Limit Dark	The maximum contrast change for dark pixels.
Contrast Limit Mid	The maximum contrast change for middle-range pixels.
Contrast Limit Light	The maximum contrast change for light pixels.
Min. Percentile	The lowest brightness percentile pixels to target for adjustment.
Quality	The amount of effort to expend analyzing the image to determine contrast.
Target Brightness	The target brightness level for background of adjusted image.
Target Contrast	The target contrast between foreground and background for the adjusted image.
Target Variance	The largest allowable variance in brightness across the image.
Max. Percentile	The highest brightness percentile pixels to target for adjustment.

 

Auto Binarize

Check this image operation to automatically convert 8-bit or 24-bit images to 1-bit. This operation can be safely used on 1-bit images. The input image is analyzed and optimal binarize parameters are automatically set to convert to a 1-bit monochrome image.

Auto Binarize does not require properties

  

Auto Image Detergent

Check this image operation to remove noise from a color image by converting colors near each selected color to the selected color. It automatically selects the colors to clean.

Auto Image Detergent Properties

 

Field	Description
Mode	Automatic ImageDetergent operation mode.
Color Count	Number of dominant colors to find for Mode=ColorCount.

 

Binarize

Check this image operation to create a bitonal image from a color or grayscale image. This operation can be safely used on 1-bit images.

The difference between Binarize and Auto Binarize is that Auto Binarize has no properties, whereas manual Binarize allows you to set your own threshold.

Binarize properties

 

Field	Description
High Threshold	A value that controls letter and figure thickness.
Low Threshold	The sensitivity of local contrast enhancement to faint features.
LCE Factor	A value that controls the background sensitivity.
Pre Blur Type	The type of blur to apply to the image.

 

Blob Removal

Check this image operation to remove blobs.

Blob removal properties

 

Field	Description
Area X-Coordinate	This value defines the x (horizontal) coordinate of the rectangular area of the blob.
Area Y-Coordinate	This value defines the y (vertical) coordinate of the rectangular area of the blob.
Area Width	This value controls the width of the blob's rectangular area.
Area Height	This value controls the height of the blob's rectangular area.
Minimum Pixel Count	This value sets the minimum number of pixels for an object to be considered a blob for removal purposes.
Maximum Pixel Count	This value sets the maximum number of pixels for an object to be considered a blob for removal purposes.
Minimum Density	This value sets the ratio of black pixels to all pixels within the convex hull of an object.

Border Removal

Check this image operation to detect and remove a scan border from an image. ScanFix Xpress assumes that the border is black, while the page is white. The border will be detected and removed.

Border removal properties

 

Field	Description
Crop Border	Check this setting to detect and remove border pixels from the image.
Replace Border	Check this setting to replace border pixels with fill color from the Pad Color property.
Deskew Border	Check this setting to deskew the image based on the angle of the detected border.
Max Page Width	This value indicates the maximum expected page width, in pixels.
Max Page Height	This value indicates the maximum expected page height, in pixels.
Min Page Width	This value indicates the minimum expected page width, in pixels.
Amount To Expand Page	This value represents the number of pixels to expand each of the four page edges.
Border Speck Size	This value indicates the maximum width or height, in pixels, of specks present in the border of the image.
Page Speck Size	This value represents the maximum width or height, in pixels, of specks present in the interior (page) portion of the image.
Quality	This value indicates the amount of effort to expend analyzing the image to locate the border.
Min Confidence	This value indicates the minimum detection confidence required before correction will proceed.
Pad Color	This represents the color to use for pixels that are added to the image or for pixels that replace border pixels.

 

Color Drop

Check this image operation to clean an image by changing groups of similar color pixels to a single color.

Color Drop Properties

 

Field	Description
Edit Color List button	Click the Edit Color List button to display the Edit Color List dialog where you can setup the list of ColorRadius specifications. The Color Drop operation will drop all colors identified by the ColorRadius specifications.   Edit Color List dialog   ColorRadius Properties - editable properties for currently selected (from list) ColorRadius specification. Color - Color value. Click the color square to change the color value. Radius - Radius of the color space values around Color to include when dropping.  Adjust using up/down arrows. Adaptive - Enable/disable adaptive determination of Color value. Add Button - Adds new ColorRadius specification to list. Remove Button - Removes currently selected ColorRadius specification from list. Ok Button - Closes Edit Color List dialog and saves all changes. Cancel Button - Closes Edit Color List dialog and discards all changes. Add: Validate button - Checks currently configured sequence of ScanFix Xpress operations and reports whether enhancements will operate successfully on 1-bit (bitonal), 8-bit (gray), and 24-bit filled images. This validation mainly catches situations where a ScanFix Xpress operation is attempted on an image format that it cannot support. After checking, a message box will be displayed with validation result messages.
Drop to Color	Color to which dropped colors will be converted.
Extract	Flag for extracting specified color regions and dropping all others to DropToColor.

 

Comb Removal

Check this image operation to control the comb removal process which detects and removes combs from the current image.

Comb removal properties

 

Field	Description
Minimum Comb Length	The minimum distance, in pixels, from the left-most comb mark to the right-most comb mark.
Comb Height	The typical height, in pixels, of a comb mark (measured from the top of the horizontal base line to the top of the mark).
Comb Spacing	The typical distance, in pixels, between comb marks.
Minimum Confidence	The confidence of an individual comb before it will be removed.
Horizontal Thickness	The typical thickness, in pixels, of the horizontal lines that comprise the comb.
Vertical Line Thickness	The typical thickness, in pixels, of the vertical lines that comprise the comb.

 

Deskew

Check this image operation to detect the skew angle of the current image and rotate the image to remove the skew.

Deskew properties

 

Field	Description
Minimum Confidence	The minimum detection confidence required before correction will proceed.
Quality	This value indicates the amount of effort to expend analyzing the image to determine skew.
Maximum Acceptable Angle	The maximum amount of skew, in degrees, that is considered acceptable during the process.
Pad Color	The color to use for pixels that are added to the image for padding during the deskew process.

Despeckle

Check this image operation for ScanFix Xpress to examine the current image to find specks and then remove them. ScanFix Xpress validates the image, detects the specks, removes them and returns the result of the process.

Despeckle properties

 

Field	Description
Speck Width	The width of the speck to remove.
Speck Height	The height of the speck to remove.

 

    

Before despeckle is performed         After despeckle is performed

 

Dilate

Check this image operation to control the dilate process which repairs dot matrix characters or correct other image distortion.

Dilate properties

 

Field	Description
Amount	The distance to extend black pixels.
Left	Check to dilate in the left direction.
Right	Check to dilate in the right direction.
Up	Check to dilate in the up direction.
Down	Check to dilate in the down direction.
All	Check to dilate in all directions.
Only Diagonal	Check to only dilate diagonally.

 

Dot Shading Removal

Check this image operation to remove shaded areas from 1-bit images, including shading behind text while preserving the text.

Dot shading removal properties

 

Field	Description
Minimum Area Width	The width of the smallest dot-shaded area that is processed.
Minimum Area Height	The height of the smallest dot-shaded area that is processed.
Vertical Size Adjustment	A value used to fine-tune the height of dots that should be removed.
Horizontal Size Adjustment	A value used to fine-tune the width of dots that should be removed.
Density Adjustment	A value used to adjust the expected density of dot shading areas.
Maximum Dot Size	The maximum width and height, in pixels, of individual dots to be removed.

 

    

Before dot shading is performed              After dot shading is performed

 

Erode

Check this image operation to control the erode process which removes the black pixels in the image by the given amount in the given direction.

Erode properties

 

Field	Description
Amount	The distance to extend black pixels.
Left	Check to erode in the left direction.
Right	Check to erode in the right direction.
Up	Check to erode in the up direction.
Down	Check to erode in the down direction.
All	Check to erode in all directions.
Only Diagonal	Check to only erode diagonally.

 

Inverse Text Correction

Check this image operation to find and correct areas containing inverse text using the Inverse Text Correction Properties.

Inverse text correction properties

 

Field	Description
Minimum Area Width	The minimum width, in pixels, of the smallest expected zone of inverse text.
Minimum Area Height	The minimum height, in pixels, of the smallest expected zone of inverse text.
Minimum Blank On Edges	The minimum horizontal length of the shortest run of black pixels along the left or right edge of an inverse zone.

 

Line Removal

Check this image operation to control the line removal process which removes lines from the image.

Line removal properties

 

Field	Description
Minimum Length	The minimum length, in pixels, a line can be in order to meet the removal criteria.
Maximum Thickness	The maximum thickness, in pixels, a line can have to meet the removal criteria.
Maximum Gap	The maximum allowed gap in a line for the line to still be considered one object.
Maximum Character Repair Size	A size to reconstruct intersected characters after performing line removal.
Minimum Aspect Ratio	The ratio of the line length to the line width.

 

Smoothing

Check this image operation to smooth the edges of characters on the selected image.

Smoothing properties

 

Field	Description
Smoothing Size	The size limit of pits and bumps to smooth in the given image.

See Also