A sensing device of an embodiment includes: a first sensor that acquires three-dimensional shape information on a surface of an object to be sensed; and a second sensor that acquires texture information on the surface or a vicinity of the surface of the object to be sensed at a position having a predetermined positional relation with an information acquisition position in the object to be sensed of the first sensor.

A fingerprint detection circuit and an electronic device are provided. The fingerprint detection circuit is configured to apply an excitation signal to a finger so as to generate finger capacitors, and the fingerprint detection circuit includes: a signal amplifier having a negative input terminal connected with one of the finger capacitors, a positive input terminal connected with a ground terminal, and an output terminal to output an output voltage according to a capacitance value of the one of the finger capacitors; a capacitor connected between the negative terminal and the output terminal of the signal amplifier; a rheostat; and a switch unit connected with the rheostat in series and configured to control the rheostat to be connected with the capacitor in parallel, such that the output voltage has a non-linear relationship with the capacitance value of the one of the finger capacitors.

By use of the characteristics that an analog-to-digital converter sends out data sequentially when it converts data of a two-dimensional analog image into pixel data, a fingerprint image detecting device and method generate digital output data having a plurality of rows of data, generate a plurality of one-dimensional datum segments linearly from the digital output data, and determine whether the two-dimensional analog image is a real fingerprint image according to the plurality of one-dimensional datum segments. Thus, the detection of a fingerprint image is implemented by means of one-dimensional calculation instead of two-dimensional calculation, thereby effectively reducing computational load and computational time.

We present several unique techniques for using touch sensor arrays to detect fingerprints and authenticate a user.

A texture recognition device and a display device are provided. The texture recognition device includes a backlight element, configured to provide first backlight; a light constraint element, configured to perform a light divergence angle constraint process on the first backlight to obtain second backlight with a divergence angle within a preset angle range, the second backlight being transmitted to a detection object; and a photosensitive element, configured to detect the second backlight reflected by a texture of the detection object to recognize a texture image of the texture of the detection object.

Provided is an imaging device including a light source that radiates light in at least two different wavelength bands and an imaging element that acquires signals individually from the light in the two different wavelength bands. The two different wavelength bands include a first wavelength band from 400 to 580 nm for use in dermatoglyphic pattern authentication, and a second wavelength band of 650 nm or more mainly including near-infrared rays for use in vein authentication.

An input sensing circuit includes a plurality of sensors to sense a touch event and to recognize a fingerprint. Among the sensors, at least one sensor includes two transistors and one capacitor. One electrode of electrodes of the capacitor makes contact with a finger of a person to form a capacitance, and the input sensing circuit senses the capacitance to sense the touch event and to recognize the fingerprint.

A fingerprint verification method includes selecting one or more first fingerprint groups from among a plurality of fingerprint groups based on an input fingerprint image, each fingerprint group of the plurality of fingerprint groups including partial fingerprint images; and determining whether verification is successful based on the input fingerprint image and each of the partial fingerprint images included in the one or more first fingerprint groups.

An electronic device is provided. The electronic device includes a light source, a fingerprint sensor, a memory configured to record an image of a reflected light detected when the light source is turned on, and a processor configured to operatively coupled to the light source, the fingerprint sensor, and the memory, wherein the light source may form an irradiation area on a display surface by light irradiation to a display, the irradiation area may include a fingerprint recognition area formed on the display, at least one surface may match the fingerprint recognition area or at least one vertex coincides, and the matched area may form a first area. The memory may store instructions allowing the processor to irradiate light in a designated direction using the light source, obtain a first image and analyze the first image to distinguish whether the object detected by the fingerprint sensor is flat or three-dimensional.

Fingerprint encryption method and device, fingerprint decryption method and device, storage medium and terminal are provided. The fingerprint encryption method includes: acquiring a fingerprint image; dividing the fingerprint image into a plurality of block images according to a preset window, wherein a size of the block image is the same with a size of the preset window; determining identifiers of the plurality of block images, wherein the identifiers of the plurality of block images have a first preset order; and determining, according to the identifiers of the plurality of block images and a received encryption order, a plurality of encrypted block images to obtain an encrypted fingerprint image. Security of fingerprint storage or fingerprint transmission is enhanced.