Minimum Detection Size and Maximum Difference Shift

What Does This Feature Do? 

Minimum Detection Size 

This is the minimum number of consecutive pixels used to flag a difference. This setting also controls the pixel changes in an inspection. By decreasing the Detection Size you will increase the sensitivity of an inspection. Likewise, by increasing the Detection Size you will decrease the sensitivity of an inspection.

Maximum Difference Shift 

This is the maximum allowable shift tolerance before an item is classified as a difference.

Why Use this Feature? 

Minimum Detection Size 

Use the Minimum Detection Size to control the pixel sensitivity of an inspection.

Maximum Difference Shift 

Use the Maximum Difference Shift setting to reduce the number of false positives caused by shifting occurring on specific location(s) of a file.

When To Use It 

• Minimum Detection Size works best with fine print such as inserts.

When Not To Use It

• In most instances, you should not adjust Maximum Difference Shift since it might be difficult to understand its application as it does not apply to the entire matched region.

Expert Tips

Minimum Detection Size: 

• Increase the Minimum Detection Size setting to reduce the number of false positives if many small, insignificant differences are being detected.

• Decrease the Minimum Detection Size setting to increase the detection of small differences if smaller differences are missed by the software.

See it in Action 

Make sure to visit The GVD Best Practices Guide for more helpful tips!