To check the WBF Capture Service you may open the following URL: https://127.0.0.1:8442/api/v1/fingerprint/capture. Present your finger on the reader while the URL is loading.
The following fields are included into the output:
captureStatus - can be 'Ok', 'Timeout', 'Error', 'NoReader'.
Width, Height - fingerprint image size (in pixels).
Dpi - dots per inch (used on matching side).
BitsPerPixel - bits per pixel (usually 8 bits).
BytesPerLine - bytes per one line in image (include align).
Image - fingerprint image encoded using base-64 in gray scale.
E.g. {"BitsPerPixel":8,"BytesPerLine":256,"Dpi":508,"Height":360,"Image":"<fingerprintdata>","Width":256,"captureStatus":"Ok"}.