73 results about "Fingerprint lines" patented technology

The invention provides a display screen. The display screen comprises a display layer and a blocking layer, wherein the display layer is provided with a displaying face facing a user, the blocking layer is arranged on the displaying face in a stacked mode, the blocking layer comprises a fingerprint recognition region, the fingerprint recognition region comprises at least one first through hole, and the first through holes are used for transmitting induction signals transmitted and received by a fingerprint module below a display screen. The invention provides a display device, the display device comprises a display screen and an optical fingerprint module, and the optical fingerprint module is arranged at the side, away from the blocking layer, of the display layer and is located at the position corresponding to the optical fingerprint recognition region. The fingerprint module comprises an optical transmitting device and an optical inductor, and light signals transmitted by the optical transmitting device are conveyed to the fingerprint lines through the first through holes and are received by the optical inductor through the first through holes after being reflected by the fingerprint lines. The invention further provides a mobile terminal, and the recognition efficiency of the optical fingerprint module is improved.

An embodiment of the invention provides a fingerprint identification driving circuit, an array substrate, a display device and a fingerprint identification method, wherein the fingerprint identification driving circuit, the array substrate, the display device and the fingerprint identification method relate to the field of displaying technology and can prevent problems of relatively large wiring space caused by corners of first scanning wires in a non-displaying area. The fingerprint identification driving circuit comprises a line driving subcircuit which is used for inputting a scanning signal to n lines of first scanning wires. The n lines of first scanning wires are divided into m signal wire sets, wherein each signal wire set comprises s first scanning wires. The fingerprint identification driving circuit comprises m fingerprint line driving units. The fingerprint line driving units are distributed in an extending line direction of the first scanning wires. Each fingerprint line driving unit is connected with a signal wire set. The fingerprint line driving unit is connected with a first clock signal end and a fingerprint starting signal end. The fingerprint line driving unit is used for inputting the signal of the first clock signal end to the first scanning wire in the signal wire set through controlling by the fingerprint starting signal end. The fingerprint identification driving circuit, the array substrate, the display device and the fingerprint identification method are used for fingerprint identification.

The invention discloses an identity authentication method based on biological feature information. The method includes: Step 1, erecting a data server in a management background; Step 2, collecting biological feature information of a user through an identity authentication device, and generating an authentication information data packet to be sent to the data server of the management background for storage; Step 3, in identity authentication of the user, the identity authentication device firstly collecting electronic data information in an identity card of the user, and then reading corresponding fingerprint line information and face feature information; and Step 4, the identity authentication device collecting fingerprint line information and face feature information, and then performing analysis and comparison with the fingerprint line information and the face feature information transmitted by the data server. If the biological feature information of the two is identical, the identity authentication is passed, and otherwise the identity authentication fails. The identity authentication method uses various biological feature information recognition technologies to perform identity authentication, and is high in security and strong in reliability.

The invention relates to application of polyamide-amine (PAMAM) dendrimer coated ZnX (X=S, Se, Te) semiconductor quantum dots in fingerprint development, belonging to the technical field of material preparation. The method comprises the following steps: synthesizing a PAMAM dendrimer coated ZnX semiconductor quantum dot solution; and carrying out fluorescence labeling on latent fingerprints by using the PAMAM dendrimer coated ZnX semiconductor quantum dot solution. The method provided by the invention avoids the problem of toxicity of heavy metal ion Cd<2+> in the existing developing reagent, and the PAMAM dendrimer coated ZnX semiconductor quantum dots are harmless to the environment and users; the addition of the metal ion M<2+> can further enhance the fluorescence-emission strength of the ZnX semiconductor quantum dots; and by using the interaction between the PAMAM dendrimer and the fingerprint residue, the invention reserves the high development efficiency in the physical development method, and overcomes the defect of insufficient detailed development of fingerprint lines in the physical development method, thereby enhancing the precision and accuracy of the latent fingerprint development.

The invention discloses a method for acquiring a characteristic size of a remote video monitored target on the basis of a depth fingerprint, which comprises the following steps of: acquiring a plurality of slice images of a region of interest of a monitored scene of a target video monitoring system by a gated imaging technique, overlapping the slice images to obtain a depth fingerprint of the region of interest and implanting the depth fingerprint into the target video monitoring system; when the monitored target appears in the region of interest, extracting the monitored target from the background, matching the monitored target with the depth fingerprint, and determining fingerprint lines which are subordinate to foot characteristic lines of the monitored target, wherein space distance information of the fingerprint lines is target distance information; and after acquiring the target distance information, inverting information of the characteristic size of the target from the length of a characteristic segment of the target to be measured, which takes a pixel as the unit, in a monitoring image according to a mopping relation between a three-dimensional space and a two-dimensional image plane under the condition of a perspective projection model. By the method, the problem that a conventional remote video monitoring system is difficult to acquire the information of the characteristic size of the target is solved.

This invention relates to an embedded system fingerprint identifying and matching method belonging to image processing and mode identifying technology realm, comprising the following steps: first, basing on area line character calculating direction graph, then making neighborhood differences statistic to realize fingerprint line enhancement; second, thinning fingerprint by adopting ossification method; third, extracting fingerprint character points by structure character; last, matching the character points. The invention can process image of fingerprint with multiple breakpoints, enhance restoring ability to breakpoint and scar, improve identifying ability to character point with similar structure.

The invention provides a touch control panel and a touch control method. The touch control panel comprises a touch control layer which comprises a fingerprint identification area and a touch control area. When the fingerprint identification area receives the high voltage/low voltage of the first input terminal, the first switch of the first signal receiving terminal is turned off, and the fingerprint identification area is used for identifying fingerprint lines; The first switch of the first signal receiving terminal is closed when the fingerprint identifying area receives a low voltage/high voltage output from the first input terminal, the fingerprint identifying area is used for identifying a touch operation; By setting the fingerprint identification area as a fingerprint identificationand touch operation time-division multiplexing area, the fingerprint identification area and the touch control area are arranged on the same layer, the manufacturing process of the touch control panelis simplified, the production cost is saved, and the thickness of the display device is reduced.

The invention discloses a fingerprint identification control method. The fingerprint identification control method comprises the following steps: debugging a plurality of first pre-determined gain parameters suitable for dry fingers through a test; calling the plurality of first pre-determined gain parameters according to user input; obtaining a fingerprint image for each first pre-determined gain parameter; and selecting an optimal fingerprint image from the plurality of fingerprint images. Besides, the invention also discloses a fingerprint identification control device and an electronic device. According to the fingerprint identification control method, the fingerprint identification control device and the electronic device, fingerprints of dry fingers or fingers, of which the fingerprint lines are shallow and dry, can be collected through the specially-set gain control parameters, so that the optimal fingerprint image can be obtained quickly to carry out related operation, the effect is good and user experience is improved.

The invention discloses a preprocessing method of a fingerprint image, particularly a low-quality fingerprint image, and a device thereof. The method comprises the steps of performing enhancement processing on an original fingerprint image, and obtaining an enhanced fingerprint image; if an absolute value of a difference between corresponding frequencies of a certain pixel in the original fingerprint image and the enhanced fingerprint image is lower than or equal to a preset difference threshold, and the absolute value of the difference between the pixel values of the pixel in the original fingerprint image and the enhanced fingerprint image is lower than or equal to alpha times of the adjacent domain mean value of the pixel in the original fingerprint image, updating the pixel value of the pixel in the enhanced fingerprint image by means of the pixel value of the pixel in the original fingerprint image, wherein alpha is a preset scale factor; and performing binary processing on the enhanced fingerprint image, thereby obtaining a binary fingerprint image. According to the method and the device, through comparing the frequency difference and the pixel value difference in the enhanced fingerprint image and the original fingerprint image, a false fingerprint line which is introduced in a processing process is modified as possible.

The invention relates to a nanometer titanium dioxide fluorescent powder, and the fluorescent powder is perylene diimide-coated nanometer titanium dioxide. The disclosed nanometer titanium dioxide fluorescent powder is a light-pink particle under natural light, is fine in powder, and can be selectively adsorbed on a fingerprint when being used to develop the potential fingerprint through brushing, phenomena of powder adhering to or retained on background are less, and the developed fingerprint shows clear and coherent lines. When being observed under natural light, the fingerprint lines show light pink, and under excitation of blue-green light, the fluorescent powder is excited and emits high-intensity fluorescent light, the fingerprint lines show orange red when being observed through an orange filter lens, good contrast can be obtained on various objects, and the problem is overcome that the contrast is not obvious when a white titanium dioxide powder is used to develop a light-color object.

The invention discloses a fingerprint developing agent based on a fluorescent colloidal particle solution, a preparation method and an application thereof. A PPV precursor solution is prepared by a Wessling sulfonium salt precursor method, an anionic surfactant is added, the branched polyethyleneimine is used as a catalyst, and a PPV colloidal particle solution containing branched polyethyleneimine in the solution is obtained by self-assembly of a polymer chain during elimination process. An immersion method is used, the sweat latent fingerprints and occult blood fingerprints on different objects are visualized, and clear and bright fingerprint lines can be observed under ultraviolet light, are suitable for fingerprint identification. The PPV colloidal particle developing solution providedby the invention has simple preparation process and convenient operation, can overcome the interference of complex background patterns, and develops sweat latent fingerprints and occult blood fingerprints on different objects; the developing agent is an aqueous dispersion, which is environmentally friendly, and can be used multiple times, saves cost, and is suitable for industrial production andconventional fingerprinting work.

The invention discloses a method of appearing and storing latent fingerprints on basis of semiconductor polymer quantum dots. The method includes: using fluorescent polymer quantum dots as a fluorescent marker to combine with organic material of a latent fingerprint left on an object, through electrostatic adhesion or hydrophilic and hydrophobic action or Van der Waals force; allowing curing under the photo-initiation condition to form a stable covalent bond three-dimensional network structure, and allowing permanent storage due to the cross-linked polymer quantum dots being not soluble or meltable and stable in physical and chemical properties; and through ultraviolet excitation, allowing the structure to contrast with a base in color so as to appear a fluorescent pattern which can clearly indicate fingerprint lines. The method is simple, fast, accurate, lossless, stable and nontoxic and environment-friendly; high sensitivity of latent fingerprint appearing is retained, the problem that exhibits are difficult to store for a long time during actual application is solved, and the method is widely applicable to the fields such as fingerprint detection, long-term lossless storage, and anti-faking.

The invention discloses a living body fingerprint identification method, electronic equipment and a computer readable storage medium. In oder to overcome the defect that existing fingerprint line images are used for identification, fingerprint lines are easy to imitate, and potential safety hazard exists, according to the embodiment of the invention, fingerprint identification is realized throughcombination of fingerprint characteristic information and sweat pore characteristics of the fingerprint, and because sweat pores of the fingerprint cannot be completely copied, the problem that the fingerprint characteristics are copied is solved, the safety of fingerprint identification is improved, and the purpose of living body detection and identification is realized.

The invention discloses a method for quantitatively calculating fingerprint deformation, which comprises the following steps of: 1) carrying out scale normalization preprocessing on two fingerprint images collected at the same finger part, and regarding one fingerprint image as a standard fingerprint drawing and regarding the other fingerprint image as a deformed fingerprint image; 2) drawing a square grid in a fingerprint line area in the standard fingerprint image, comparing the fingerprint line area of the deformed fingerprint image to select an intersection of effective square grids in thestandard fingerprint image as a reference point, and establishing coordinates; 3) finding out positions corresponding to all reference points of the standard fingerprint image in the deformed fingerprint image as reference points of the deformed fingerprint image, drawing a square grid and establishing coordinates; 4) calculating an average distance deformation amount and an average angle deformation amount between the standard fingerprint image and the deformed fingerprint image; and 5) calculating a total relative deformation amount delta Z between the deformed fingerprint image and the standard fingerprint image.

The invention discloses a method for utilizing a fingerprint children lock to control a disinfection cabinet. The method comprises the steps of 1, acquiring fingerprint input of a user and obtaining afingerprint image to be recognized; 2, obtaining fingerprint characteristics of the fingerprint image; 3, judging whether following conditions are satisfied or not: 1), whether the fingerprint line spacing in the fingerprint characteristics is larger than a preset numerical value or not and 2), whether the contact time of fingerprints pressed in a fingerprint acquiring area is larger than a preset pressing time threshold value or not; if the condition 1 or condition 2 is satisfied, disenabling the children lock function so that a cabinet door of the disinfection cabinet can be normally opened. Fingerprints do not need to be input and stored in a fingerprint library, the fingerprint line spacing in the fingerprint characteristics and the contact time of the fingerprints pressed in the fingerprint acquiring area are used as important means of enabling and disenabling the children lock, therefore whether to disable the children lock function or not is determined, and the problem that children operate the disinfection cabinet by mistake can be effectively solved.

The invention discloses a fingerprint identification method and device. The method comprises the steps that the fingerprint identification device can collect a fingerprint image for a target object; a target fingerprint line is determined from the fingerprint image, and whether the target fingerprint line has sweat gland holes is determined; if the sweat gland holes exist, the fingerprint of the target object is determined as a fingerprint living body; if the sweat gland holes do not exist, the fingerprint of the target object is determined as a fingerprint prosthesis. According to the invention, the fingerprint identification device can identify the sweat gland holes in the fingerprint image, and identifies whether the fingerprint is genuine or sham based on the presence or absence of the sweat gland holes in the fingerprint image; genuine or sham fingerprints can be accurately identified; and the security of fingerprint identification is improved.

The invention relates to the technical field of fingerprint machines, and discloses fingerprint machine equipment suitable for dry hands, the fingerprint machine equipment comprises a placement box and a fingerprint machine arranged in the placement box, and a detection mechanism is used for sensing that finger pads are in a wet state or the surfaces of the finger pads are relatively not dry; when the finger pad does not make contact with the friction pad and does not drive the friction pad to rotate, or when the rotation angle is small, it shows that the surface of the finger pad is dry and cannot be scanned through the fingerprint machine, and meanwhile, the fan is driven by a specific mechanism to rotate to blow-dry alcohol stained on the fingerprint machine. In this way, when the finger belly is humidified, it is prevented that fingerprint lines of the finger belly cannot be recognized when the finger belly is dry, the surface of the fingerprint machine is cleaned, the disinfected alcohol is blown dry through the fan, and the surface of the fingerprint machine is dried so that the fingerprint machine can be used by follow-up personnel; and therefore, the problem that the fingers of the user are dry and cannot be scanned is solved, and the whole is disinfected synchronously.

The invention provides a fingerprint input method and electronic equipment. The method comprises the following steps: after the electronic equipment obtains fingerprint information corresponding to a first part fingerprint of a finger, displaying a fingerprint line of a first area in a fingerprint display area so as to indicate that the fingerprint of the first part of the finger is input; and then, after the electronic equipment obtains the fingerprint information corresponding to the fingerprint of the second part of the finger, the fingerprint lines of the second area are displayed in the fingerprint display area so as to indicate that the fingerprint of the second part of the finger has been input. The electronic equipment may register a fingerprint of the finger based on the acquired plurality of pieces of fingerprint information. The invention provides a fingerprint input mode, the display mode of fingerprint input can be enriched, and the user experience is improved.