DPUruNet Contains static methods to compare FMDs. Dissimilarity score equivalent to no match. Compares two fingerprints. Given two single views from two Fmds, this function returns a dissimilarity score indicating the quality of the match. The dissimilarity scores returned values are between: 0 (match), Max Integer Value (no match). Values close to 0 indicate very close matches, values closer to maxint indicate very poor matches. For a discussion of how to evaluate dissimilarity scores, as well as the statistical validity of the dissimilarity score and error rates, consult the Developer Guide. /// The Compare function returns DP_SUCCESS if it is able to compare the fingerprints successfully (i.e., the Fmds are valid and correctly formed). However that does not mean that the fingerprints matched. To check whether they matched, you must look at the dissimilarity score. First FMD Index of the view in the first FMD Second FMD Index of the view in the second FMD \return DP_SUCCESS: Comparison finished; \return DP_INVALID_PARAMETER: One or more parameters passed are invalid; \return DP_FAILURE: Unknown error. Compares a single fingerprint to an array of fingerprints. This function takes as inputs: - a single view in an Fmd - an array of Fmds (each Fmd can contain up to 16 views) to compare, all of the same format - the desired number of matches to return - the threshold for False Positive Identification Rate that is permitted This function compares a single view against an array of Fmds. Each time view has a score lower than the threshold, that view is marked as a possible candidate. Then when all possible candidates are identified (i.e., they meet the threshold), they are ranked by their score. Finally, the function returns as many candidates as requested, based on the candidates with the lowest dissimilarity score. For a discussion of setting the threshold as well as the statistical validity of the dissimilarity score and error rates, consult the Developer Guide. First FMD Index of the view in the first FMD Array of FMDs. Null items are not allowed between FMDs Target threshold on degree of dissimilarity, between 0 and int.MaxValue How many candidates to return \return DPFJ_SUCESS: Identification finished \return DP_INVALID_PARAMETER: One or more parameters passed are invalid; \return DP_FAILURE: Unknown error Compare results containing result code and dissimilarity score. Dissimilarity score. Constructor for CompareResult. Resule code Dissimilarity score Identify results containing result code and an 2-dimensional array of finger/view pairs where matches are located within the gallery identified. Write a custom algorithm to search through the gallery using this result set. Contains matches of an identity operation as an array of finger/view index pairs. Constructor for IdentifyResult. Result code Array of finger/view index pairs Constants compression algorithm to use. WSQ compression, NIST algorithm WSQ compression, Aware SDK Starts compression or decompression operation. Throws SDKException if failed to start operation. Ends compression or decompression operation, releases memory. Throws SDKException if failed to finish operation. Sets target bitrate and tolerance for WSQ compression operation. Requested bitrate multiplied by 100. For example, to request bitrate of 4.19, pass 419. Sets tolerance in percents for the Aware WSQ compression. Range is 1 to 100. If NIST algorithm used this parameter will be ignored. Throws SDKException if failed to set bitrate. Sets target size and tolerance for WSQ compression operation. Requested size of compressed image. Sets tolerance in percents for the Aware WSQ compression. Range is 1 to 100. If NIST algorithm used this parameter will be ignored. Contains constants and enumerations. Maximum FMD size. .NET Wrapper version. Capture priority. Result of the capture operation. Image processing. Impression type. Enumeration describing reader status. Enumeration describing reader modality (i.e., swipe, area). Enumeration describing reader technology (i.e., optical, capacitive, ...). Enumeration describing used engine type (i.e., DigitalPersona FingerJet, Innovatrics ANSI ISO Generator and Matcher, DigitalPersona FingerJet matching engine v7.0.0, Minex-certified). Contains Fid and Fmd format types. Bidirectional image conversion format. Minutiae output formats. Result codes: DP_SUCCESS - Success DP_NOT_IMPLEMENTED - Signals that particular function is not implemented. DP_FAILURE - “Catch-all” generic failure code. Can be returned by all API calls in case of failure, when the reason of failure unknown or cannot be specified. DP_NO_DATA - No data is available. DP_MORE_DATA - Memory allocated by application is not enough to contain data which is expected. DP_INVALID_PARAMETER - Returned when one or more parameters passed to the API call are not valid. DP_INVALID_DEVICE - Returned when the current Reader object is not associated with a valid device. DP_DEVICE_BUSY - Returned when API call cannot be completed because another operation is in progress. DP_DEVICE_FAILURE - Returned in case of reader not working properly. DP_INVALID_Fid - Returned when the image data received by the SDK is invalid. DP_TOO_SMALL_AREA - Returned if the image is too small. DP_INVALID_Fmd - Returned when the minutiae data received by the SDK is invalid. DP_ENROLLMENT_IN_PROGRESS - Enrollment operation is in progress. DP_ENROLLMENT_NOT_STARTED - Enrollment operation has not begun. DP_ENROLLMENT_NOT_READY - Not enough in the pool of Fmds to create enrollment Fmd. DP_VERSION_INCOMPATIBILITY - Returned when version of the deserialized data is greater than the installed wrapper’s version. Sets reader to either use the default configuration or use the setup customized by the client application. Whether to turn the LED on or off. Which Led to control. Base class containing the result code of a .Net Wrapper operation. Result code. Constructor. Result code Contains result code and fingerprint data. Data object, i..e, an FMD or FID. Custom exception container containing a result code and inner exception. Pointer utility object containing various pointer utilities Create a pointer to empty memory. Size of target byte array containg all zero's Pointer to empty memory Create a pointer to filled memory. Memory block Pointer to filled memory Get bytes that the specified pointer points to. Pointer to filled memory Size of memory block Byte array Contains static methods to extract fingerprint data. Imports an Fmd from any supported format to any other supported format. input Fmd input format \return DP_SUCCESS: Fmd was extracted; \return DP_INVALID_PARAMETER: One or more parameters passed are invalid; \return DP_FAILURE: Failed to extract Fmd. \brief Imports legacy DigitalPersona image to the image in ANSI or ISO format. Fid to convert input resolution output format rotate the image \return DP_SUCCESS: Fid was created \return DP_FAILURE: Failed to create Fid \brief Imports an Fid. Fid to convert input format \return DP_SUCCESS: Fid was created \return DP_FAILURE: Failed to create Fid Base container class for data common to all fingerprint data strcutures. Raw bytes of fingerprint data. .NET Wrapper version the fingerprint data originated from. Constructor for container class holding properties and methods common to all fingerprint data structures. Raw bytes of fingerprint data Image format .NET Wrapper version the fingerprint data originated from Private helper class to retrieve string data from an XmlNodeList. Node containing data Serialize XML helper class. Raw bytes of fingerprint data Image format .NET Wrapper version the fingerprint data originated from Validate the data. Raw bytes of fingerprint data Image format .NET Wrapper version the fingerprint data originated from \return DP_SUCCESS = bytes, format, and version are valid. \return DP_VERSION_INCOMPATIBILITY = version of data is not compatible with the wrapper's version. \return DP_INVALID_PARAMETER = one or more parameters has an incorrect value. Reads an integer from bytes. Raw bytes of fingerprint data Index of where bytes are read from Number of bytes to read Reverses a byte array. Array to reverse Class represents Fingerprint Minutiae Data (FMD). Class reflects ANSI INSITS 378-2004 and ISO IEC 19794-2-2005 formats, as well as legacy DigitalPersona templates. Image format (i.e., ANSI, ISO, ...) Width. View count. Height. Capture equipment ids. Capture equipment comp. Views contained within the Fmd. Overloaded constructor. Raw bytes of fingerprint data Format (i.e., ANSI, ISO, ...) .NET Wrapper version the fingerprint data originated from Deserialize string data into an Fmd object. Serialized Fmd Fmd deserialized. Serialize Fml object to xml string. Fmd Fmd serialized to string. Load views. Fingerprint Minutiae View. Raw view bytes. Finger position. Minutiae count. Quality score. View number. Constructor for an Fmv. Class represents Fingerprint Image Data (FID). Class reflect ANSI INSITS 381-2004 and ISO IEC 19794-4-2005 formats. Image format (i.e., ANSI, ISO, ...) CBEFF ID. Resolution. Aquisition level. Bits per pixel. Capture device id. Compression type. Finger count. Image resolution. Scale units Scan resolution. Fiv list. Constructor for Fid. Raw bytes of fingerprint data Format (i.e., ANSI, ISO, ...) .NET Wrapper version the fingerprint data originated from Load views. Deserialize string data into an FID object. Serialized FID Serialize Fml object to xml string. FID to serialize FID serialized to string. Fingerprint Image View. Raw view bytes. Image row-column data. Height. Width. Depth. Finger position. Impression type. View count. View number. Constructor for Fiv. Raw bytes of fingerprint data Contains a static method to enroll fingers and create an enrollment Fmd. Creates and returns enrollment FMD. Create an Fmd for an enrolled finger. The output Fmd is suitable for storing in a database of enrolled users. Some applications like voting, banking and law enforcement require that you check for duplicate fingerprints before storing a new fingerprint in the database. For ANSI/ISO formats, the enrollment Fmd is a standard Fmd (the same as an Fmd generated by the extraction function). Enrollment FMD format FMDs to enroll DP_SUCCESS: Fmd created; DP_MORE_DATA: Fmd created, but allocated memory is not sufficient. The required memory size is in the fmd_size; DP_INVALID_PARAMETER: One or more parameters passed are invalid; DP_FAILURE: Unknown error. Class to extract an FMD from a raw image or an FID Extracts features and creates an Fmd from an ANSI or ISO image. This function works with Fids that have: - 8 bits per pixel - no padding - square pixels (dpi is the same for horizontal and vertical) FID to extract features Format of the FMD \return DP_SUCCESS: Fmd was created; \return DP_INVALID_PARAMETER: One or more parameters passed are invalid. \return DP_FAILURE: Failed to create Fmd. Extracts features and creates an FMD from a raw image. When you do a fingerprint capture, you can receive a raw image or a Fid. If you specify a raw image, you can then extract features into an Fmd using this function. The raw image is just a buffer of pixels. This function works with raw images that have: - 8 bits per pixel - no padding - square pixels (dpi is the same for horizontal and vertical) Image data Position of the finger CBEFF product ID, from IBIA registry Width of the image Height of the image Resolution of the finger in dpi Format of the FMD \return DP_SUCCESS: Fmd was created; \return DP_INVALID_PARAMETER: One or more parameters passed are invalid. \return DP_FAILURE: Failed to create Fmd. Constants for nfiq algorithm to use. NFIQ, NIST algorithm NFIQ, Aware SDK Class represents raw image data. Width of the image, in pixels Height of the image, in pixels Image resolution, in DPI Pixel depth of the image Image data Represents the a physical fingerprint reader. Contains methods to capture and stream an Fid. Contains details about the reader, its capabilities, and current status. Contains complete information about reader hardware. The reader's GUID. Can be used to uniquely identify the reader externally. Unique name of the reader. Reader modality. Reader technology. Constructs a container class to hold complete information about reader hardware. The reader's GUID Unique name of the reader Reader modality Reader technology Reader id product and vendor information Reader version details Reader id product and vendor information. Vendor name. Vendor id. Product name. Product id. Constructs a container class to hold reader id details. Vendor name Vendor id Product name Product id Constructs a container class to hold reader id details. Contains firmware and hardware versions. Firmware version, including major, minor, and revision numbers. Hardware version, including major, minor, and revision numbers. Constructs a container for firmware and hardware versions. Firmware version Hardware version Contains firmware and hardware versions. Complete information about the reader hardware. Container class describing status of the reader. Constants describing status of the reader. Flag to show if reader detects a finger. Additional vendor-specific data which may be passed by the driver. Constructs a container class to hold reader status. Status value of the reader Whether or not a finger is detected. 0 = no finger, 1 = finger detected Vendor-specific data Container class to hold reader status. Contains information about reader capabilities (i.e., can capture, can stream, ...) Flag: reader can capture images. Flag: reader can stream images. Flag: reader can extract features from captured image and return fingerprint features data. Flag: reader can perform match one-to-one. Flag: reader can perform match one-to-many. Flag: reader has storage for fingerprint features data. Flag: power mode of the reader can be controlled. Flag: reader can be calibrated. Flag: can produce PIV compliant images. Available resolutions. Indicator Type. Constructs a class to contain information about reader capabilities (i.e., can capture, can stream, ...) Flag: reader can capture images Flag: reader can stream images Flag: reader can extract features from captured image and return fingerprint features data Flag: reader can perform match one-to-one Flag: reader can perform match one-to-many Flag: reader has storage for fingerprint features data Flag: power mode of the reader can be controlled Flag: reader can be calibrated Flag: can produce PIV compliant images Available resolutions Type of indicator Contains information about reader capabilities (i.e., can capture, can stream, ...) Private method to aggregate capture and streaming methods. Format of the image Processing of the image Defines timeout in milliseconds (unsigned int); (-1) means no timeout (function will block until a fingerprint is captured) Resolution of the image Whether to capture or stream an image This function captures a fingerprint image from the opened reader device. This function signals the device that a fingerprint is expected and waits until a fingerprint is received. This function blocks until an image is captured, capture fails or timeout is expired. This function cannot be called in streaming mode. Format of the image Processing of the image Timeout in milliseconds; -1 means no timeout (function will block until a fingerprint is captured or a cancel is caused) Resolution of the image \return DPFPDD_SUCCESS: Image captured. Extended result is in capture_result; \return DPFPDD_E_FAILURE: Unexpected failure; \return DPFPDD_E_INVALID_DEVICE: Invalid reader; \return DPFPDD_E_DEVICE_BUSY: Another operation is in progress; \return DPFPDD_E_INVALID_PARAMETER: Wrong data type or image format in the capture_parm; \return DPFPDD_E_DEVICE_FAILURE: Failed to start capture, reader is not functioning properly. \brief Capture a fingerprint image asynchronously. This function starts asyncronous capture on the opened reader device. This function signals the device that a fingerprint is expected and then exits. This function cannot be called in streaming mode. Format of the image Processing of the image Resolution of the image \return DPFPDD_SUCCESS: Image captured. Extended result is in capture_result \return DPFPDD_E_FAILURE: Unexpected failure \return DPFPDD_E_INVALID_DEVICE: Invalid reader handle \return DPFPDD_E_DEVICE_BUSY: Another operation is in progress \return DPFPDD_E_INVALID_PARAMETER: Wrong data type or image format in the capture_parm \return DPFPDD_E_DEVICE_FAILURE: Failed to start capture, reader is not functioning properly Callback event triggered when a CaptureResult is available. Delegate which returns a CaptureResult. Cancels pending capture. \return DPFPDD_SUCCESS: Capture canceled; \return DPFPDD_E_FAILURE: Unexpected failure; \return DPFPDD_E_INVALID_DEVICE: Invalid reader; \return DPFPDD_E_DEVICE_FAILURE: Failed to cancel capture, reader is not functioning properly. Puts reader into streaming mode. Not all readers support this mode. When the reader is in streaming mode, the application can only call GetStreamImage() to acquire images from the stream. \return DPFPDD_SUCCESS: Reader put into streaming mode; \return DPFPDD_E_FAILURE: Unexpected failure; \return DPFPDD_E_INVALID_DEVICE: Invalid reader; \return DPFPDD_E_INVALID_PARAMETER: Wrong data type or image format in the capture_parm; \return DPFPDD_E_DEVICE_BUSY: Another operation is in progress; \return DPFPDD_E_DEVICE_FAILURE: Failed to start streaming, reader is not functioning properly. Takes an image from the stream. After the reader is put into streaming mode this function takes an image from the stream. After this function returns, the reader stays in the streaming mode. Frame selection, scoring or other image processing is not performed. If the memory is not sufficient for the image, then \return DPFPDDPDD_E_MORE_DATA will be returned. For every image from the stream, the driver provides a score (in capture_result.score) and quality feedback (in capture_result.quailty). Format of the image Processing of the image Resolution of the image \return DPFPDD_SUCCESS: Image acquired from the stream. Extended result is in capture_result; \return DPFPDD_E_FAILURE: Unexpected failure; \return DPFPDD_E_INVALID_DEVICE: Invalid reader; \return DPFPDD_E_DEVICE_BUSY: Another operation is in progress; \return DPFPDD_E_MORE_DATA: Insufficient memory is allocated for the image_data, the required size is in the image_size; \return DPFPDD_E_INVALID_PARAMETER: Wrong data type or image format in the capture_parm; \return DPFPDD_E_DEVICE_FAILURE: Failed to acquire image from the stream, reader is not functioning properly. Stops streaming mode \return DPFPDD_SUCCESS: Streaming was stopped; \return DPFPDD_E_FAILURE: Unexpected failure; \return DPFPDD_E_INVALID_DEVICE: Invalid reader; \return DPFPDD_E_DEVICE_FAILURE: Failed to stop streaming, reader is not functioning properly. Opens a reader and populates ReaderCapabilities sub-class. \return DPFPDD_SUCCESS: Reader was successfullly opened; \return DPFPDD_E_FAILURE: Unexpected failure; \return DPFPDD_E_INVALID_DEVICE: No reader with this name found; \return DPFPDD_E_DEVICE_BUSY: Reader is already opened by the same or another process; \return DPFPDD_E_DEVICE_FAILURE: Failed to open the reader. Private retrieve device capabilities. Releases the reader. Calibrates the reader. This function calibrates a reader and blocks until the calibration is complete. It can take several seconds to calibrate for some devices. \return DPFPDD_SUCCESS: Calibration succeeded; \return DPFPDD_E_FAILURE: Unexpected failure; \return DPFPDD_E_INVALID_DEVICE: Invalid reader; \return DPFPDD_E_DEVICE_BUSY: Another operation is in progress; \return DPFPDD_E_DEVICE_FAILURE: Failed to calibrate, reader is not functioning properly. Populates the ReaderStatus sub-class. \return DPFPDD_SUCCESS: Reader status obtained; \return DPFPDD_E_FAILURE: Unexpected failure; \return DPFPDD_E_INVALID_DEVICE: Invalid reader; Resets the reader. This function performs a hardware reset on the reader. Hardware resets are typically needed only after a hardware problem (e.g., the reader is unplugged or receives an electrostatic shock). This function blocks until the reset is complete. \return DPFPDD_SUCCESS: Reset succeeded; \return DPFPDD_E_FAILURE: Unexpected failure; \return DPFPDD_E_INVALID_DEVICE: Invalid reader; \return DPFPDD_E_DEVICE_BUSY: Another operation is in progress; \return DPFPDD_E_DEVICE_FAILURE: Failed to reset, reader is not functioning properly. An enumerable, disposable singleton collection of reader objects, representing all readers attached to the system.. Constructor to create the list of reader objects and initalize reader context. This method searches available readers and refreshes information about them. Private method to refresh the current list of readers. This method destroys reader collection and releases resources associated with the readers. Private decoder for UTF8 strings. Returns the Reader at a specified index in the ReaderCollection. index of Reader Reader count. IEnumerable.GetEnumerator(). Contains capture result code, quality, score, and Fid. Image quality. Image score. Constructor to create a container class for the result of a capture or streaming operation. result code image quality image score captured Fid Level 0 type for window station handles.