Abstract: The present disclosure provides sound source identification based on array measurement and sparse prior information, which uses a generalized minimax concave penalty function to apply a sparse constraint on a sound source reconstruction error, determines position information of a potential sound source according to a basic sound image generated by a conventional beamforming method, and generates an initial solution vector including a sound source position prior information in a specific way. Compared with using a random initial value and a zero initial value, computational efficiency of the disclosed sound field reconstruction method is improved. Further, an iterative convergence speed is improved by using a proximal gradient acceleration and an adaptive step size backtracking strategy, an optimal step size that can meet convergence is adaptively selected, and sound field reconstruction can be completed more quickly.

Abstract: The present disclosure provides sound source identification based on array measurement and sparse prior information, which uses a generalized minimax concave penalty function to apply a sparse constraint on a sound source reconstruction error, determines position information of a potential sound source according to a basic sound image generated by a conventional beamforming method, and generates an initial solution vector including a sound source position prior information in a specific way. Compared with using a random initial value and a zero initial value, computational efficiency of the disclosed sound field reconstruction method is improved. Further, an iterative convergence speed is improved by using a proximal gradient acceleration and an adaptive step size backtracking strategy, an optimal step size that can meet convergence is adaptively selected, and sound field reconstruction can be completed more quickly.

Abstract: A fingerprint identification apparatus, comprising: a nonopaque nonopaque glass cover plate, a display unit, an optical film, an imaging unit, and a photoelectric sensing unit, wherein the nonopaque glass cover plate has a touch interface for contacting a to-be-identified fingerprint; the display unit is provided with a plurality of pixels, a part of the plurality of pixels form one or more point light source regions; the optical film is provided with a light-transmitting region allowing light to pass through the optical film and a light-blocking region configured for preventing light from passing through the optical film; light emitted from one or more point light source region is reflected by an upper surface of the nonopaque cover glass, the reflected light passes through the nonopaque cover glass, the display unit, and the light-transmitting region of the optical film, and is imaged by the imaging unit onto the photoelectric sensing unit.

Abstract: 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.

Abstract: The present disclosure provides a fingerprint identification method and apparatus, a storage medium, and a terminal. The fingerprint identification method includes: collecting a to-be-identified fingerprint image of a to-be-identified fingerprint; identifying whether the to-be-identified fingerprint belongs to a first type of fingerprint; calculating an image correlation between the to-be-identified fingerprint image and a standard fingerprint image, when it's determined that the to-be-identified fingerprint belongs to the first type of fingerprint; calculating a feature point matching result between the to-be-identified fingerprint image and the standard fingerprint image when it's determined that the to-be-identified fingerprint does not belong to the first type of fingerprint; and determining whether the to-be-identified fingerprint is consistent with the standard fingerprint; wherein the standard fingerprint image is a fingerprint image collected from a standard fingerprint.

Abstract: The present disclosure provides a light detection apparatus and application thereof. The apparatus includes: a nonopaque cover plate, a display, and a photosensor, and further including a processor configured to transmit a display driving signal to the display when the apparatus detects a touch signal on the apparatus; wherein the display includes a plurality of display pixels configured to emit an optical signal when receiving the display driving signal transmitted by the processor, and the optical signal is reflected on an upper surface of the nonopaque cover plate to form a reflected optical signal; and wherein the reflected optical signal is received by the photosensor. By some embodiments of the present disclosure, obtained physiological feature information can be more accurate and identification precision can be effectively improved.

Abstract: Method for determining imaging ratio of flexible panel, electronic device and storage medium are provided. A first surface of the flexible panel is adapted to be placed with an object to be imaged, an image capturing device is disposed on the second surface, and a curvature radius of the first surface is adjustable. The method includes: for a light source in the image capturing device, acquiring a real-time image formed on the image capturing device after a light signal emitted from the light source is reflected by the first surface; determining a real-time curvature radius of the first surface based on the real-time image; and calculating the imaging ratio based on the real-time curvature radius and thickness of the flexible panel. The imaging ratio is determined based on bending degree of the flexible panel in real time to acquire an image with size approximate to actual size of the object.

Abstract: An image capturing apparatus and an electronic device are provided. The image capturing apparatus includes: a light-transmitting cover plate, a light source component, a sensor component, and a lens disposed between the light source component and the sensor component. A preset angle is formed between a central axis of the lens and a normal of the light source component. A light generated by the light source component is transmitted through the light-transmitting cover plate, and then is scattered by the object to be captured, and the scattered light is focused by the lens to the sensor component. The light source component is disposed outside of a depth of field of the lens, and the object to be captured is disposed within the depth of field of the lens.

Abstract: The present invention discloses a topological structure light source driving method, a storage medium and an electronic device applied to off screen imaging. The method includes the following steps of: lighting up pixel points of one or more separate light source regions of a display panel, the light source regions being arranged in a topological structure and spaced by nonluminous pixel points, the light source regions including one or more pixel points; obtaining, through a light sensor, light of pixel points that is totally reflected by a light-permeable cover plate; the display panel and the light sensor are placed under the light-permeable cover plate. Distinguishing from the prior art, the above technical scheme, by one or more pixel points forming one light source, improves the brightness of the light source and enhances the quality of lens-free off-screen optical imaging, while having multiple light sources for image imaging also improves the imaging efficiency.

Abstract: The present disclosure provides a fingerprint identification method and apparatus, a storage medium, and a terminal. The fingerprint identification method includes: collecting a to-be-identified fingerprint image of a to-be-identified fingerprint; identifying whether the to-be-identified fingerprint belongs to a first type of fingerprint; calculating an image correlation between the to-be-identified fingerprint image and a standard fingerprint image, when it's determined that the to-be-identified fingerprint belongs to the first type of fingerprint; calculating a feature point matching result between the to-be-identified fingerprint image and the standard fingerprint image when it's determined that the to-be-identified fingerprint does not belong to the first type of fingerprint; and determining whether the to-be-identified fingerprint is consistent with the standard fingerprint; wherein the standard fingerprint image is a fingerprint image collected from a standard fingerprint.

Abstract: The present disclosure provides a fingerprint identification method and apparatus, a storage medium, and a terminal. The fingerprint identification method includes: collecting a to-be-identified fingerprint image of a to-be-identified fingerprint; calculating an image correlation between the to-be-identified fingerprint image and a standard fingerprint image, wherein the standard fingerprint image is a fingerprint image collected from a standard fingerprint; and determining whether the to-be-identified fingerprint is consistent with the standard fingerprint according to the image correlation. The solution provided by the present disclosure can effectively improve the accuracy of fingerprint identification.

Abstract: A fingerprint identification apparatus, comprising: a nonopaque nonopaque glass cover plate, a display unit, an optical film, an imaging unit, and a photoelectric sensing unit, wherein the nonopaque glass cover plate has a touch interface for contacting a to-be-identified fingerprint; the display unit is provided with a plurality of pixels, a part of the plurality of pixels form one or more point light source regions; the optical film is provided with a light-transmitting region allowing light to pass through the optical film and a light-blocking region configured for preventing light from passing through the optical film; light emitted from one or more point light source region is reflected by an upper surface of the nonopaque cover glass, the reflected light passes through the nonopaque cover glass, the display unit, and the light-transmitting region of the optical film, and is imaged by the imaging unit onto the photoelectric sensing unit.

Abstract: A method for determining an imaging ratio of a curved panel is provided, wherein a first surface of the curved panel is placed with a to-be-imaged object thereon, an image capturing device is disposed on a second surface opposite to the first surface in a thickness direction of the curved panel, the image capturing device is configured to capture an image of the to-be-imaged object being imaged by the curved panel, and the method comprises: obtaining a thickness of the curved panel and a curvature radius of the first surface of the curved panel; and calculating the imaging ratio of the curved panel for the to-be-imaged object according to the obtained thickness and curvature radius. Therefore, the captured image is corrected according to the imaging ratio, thereby capturing an image that is close to an actual size of the to-be-imaged object.

Abstract: The present disclosure provides a light detection apparatus and application thereof. The apparatus includes: a nonopaque cover plate, a display, and a photosensor, and further including a processor configured to transmit a display driving signal to the display when the apparatus detects a touch signal on the apparatus; wherein the display includes a plurality of display pixels configured to emit an optical signal when receiving the display driving signal transmitted by the processor, and the optical signal is reflected on an upper surface of the nonopaque cover plate to form a reflected optical signal; and wherein the reflected optical signal is received by the photosensor. By some embodiments of the present disclosure, obtained physiological feature information can be more accurate and identification precision can be effectively improved.

Abstract: A method and an apparatus for fingerprint collection are provided. The method includes: lighting up pixels of a plurality of light source regions on a display panel according to a preset timing sequence, where each light source region includes one or more pixels, all the light source regions are simultaneously lighted up during a first time period and none of light source regions is lighted up during a second time period; controlling a photoelectric sensing module to collect first and second optical signals respectively in the first and second time periods, the first optical signal including a reflected light signal formed by reflecting, with a light-transmissive cover plate, light from the light source regions; correcting the collected first optical signal based on the second optical signal, where the display panel and the photoelectric sensing module are disposed at a same side of the light-transmissive cover plate.

Abstract: A fingerprint identification method and apparatus, a storage medium and a terminal are provided. The fingerprint identification apparatus includes a glass cover plate, a touch sensing unit, a display unit, an optical film, an imaging unit, a photoelectric sensing unit, and a control unit. The optical film is provided with multiple light-transmitting regions and multiple light-blocking regions, the multiple light-blocking regions are used for blocking light emitted from at least a part of pixels that directly enters the optical film without being reflected by the glass cover plate or the to-be-identified fingerprint. With the fingerprint identification apparatus, a sharp image of a to-be-identified fingerprint (whether or not the to-be-identified fingerprint is from a dry finger) is collected, and a signal-to-noise ratio and an accuracy of fingerprint identification can be significantly improved.

Abstract: An energy storage device is disclosed that includes an axial structure with two or more rigid energy storage units and conductive flexible components separating adjacent rigid energy storage units. The rigid energy storage units include a plurality of folded layers, including an anode layer, a cathode layer, a first current collector layer, a second current collector layer, one or more separator layers, and one or more tape layers. The adjacent rigid energy storage units are produced by folding the plurality of layers one or more times onto themselves at a plurality of locations along the axial structure. The axial structure is then sealed in an aluminized casing along with an electrolyte material. The energy storage device exhibits high energy density, high foldability, and excellent electrochemical performances by virtue of the folded rigid energy storage segments connected by the flexible components.

Abstract: Method for determining imaging ratio of flexible panel, electronic device and storage medium are provided. A first surface of the flexible panel is adapted to be placed with an object to be imaged, an image capturing device is disposed on the second surface, and a curvature radius of the first surface is adjustable. The method includes: for a light source in the image capturing device, acquiring a real-time image formed on the image capturing device after a light signal emitted from the light source is reflected by the first surface; determining a real-time curvature radius of the first surface based on the real-time image; and calculating the imaging ratio based on the real-time curvature radius and thickness of the flexible panel. The imaging ratio is determined based on bending degree of the flexible panel in real time to acquire an image with size approximate to actual size of the object.

Abstract: A fingerprint identification method and apparatus, a storage medium and a terminal are provided. The fingerprint identification apparatus includes a glass cover plate, a touch sensing unit, a display unit, an optical film, an imaging unit, a photoelectric sensing unit, and a control unit. The optical film is provided with multiple light-transmitting regions and multiple light-blocking regions, the multiple light-blocking regions are used for blocking light emitted from at least a part of pixels that directly enters the optical film without being reflected by the glass cover plate or the to-be-identified fingerprint. With the fingerprint identification apparatus, a sharp image of a to-be-identified fingerprint (whether or not the to-be-identified fingerprint is from a dry finger) is collected, and a signal-to-noise ratio and an accuracy of fingerprint identification can be significantly improved.

Abstract: An image capturing apparatus and an electronic device are provided. The image capturing apparatus includes: a light-transmitting cover plate, a light source component, a sensor component, and a lens disposed between the light source component and the sensor component. A preset angle is formed between a central axis of the lens and a normal of the light source component. A light generated by the light source component is transmitted through the light-transmitting cover plate, and then is scattered by the object to be captured, and the scattered light is focused by the lens to the sensor component. The light source component is disposed outside of a depth of field of the lens, and the object to be captured is disposed within the depth of field of the lens.