FingerprintImageOptions (SourceAFIS 3.18.1 API)

java.lang.Object
- com.machinezoo.sourceafis.FingerprintImageOptions

```
public class FingerprintImageOptions
extends Object
```
Additional information about fingerprint image. FingerprintImageOptions can be passed to FingerprintImage constructor to provide additional information about fingerprint image that supplements raw pixel data. Since SourceAFIS algorithm is not scale-invariant, all images should have DPI configured explicitly by calling dpi(double).

See Also:

FingerprintImage

Constructor Summary

Constructors
Constructor	Description
`FingerprintImageOptions()`	Initializes default options.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`FingerprintImageOptions`	`dpi(double dpi)`	Sets image resolution.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - FingerprintImageOptions
```
public FingerprintImageOptions()
```
    Initializes default options. Call methods of this class to customize the options.
- Method Detail
  - dpi
```
public FingerprintImageOptions dpi(double dpi)
```
    Sets image resolution. Resolution in measured in dots per inch (DPI). SourceAFIS algorithm is not scale-invariant. Fingerprints with incorrectly configured DPI may fail to match. Check your fingerprint reader specification for correct DPI value. Default DPI is 500.
    
    Parameters:
    
    dpi - image resolution in DPI (dots per inch), usually around 500
    
    Returns:
    
    this (fluent method)
    
    Throws:
    
    IllegalArgumentException - if dpi is non-positive, impossibly low, or impossibly high