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Anonymous users2024-02-06Fingerprints, due to their lifelong immutability, uniqueness and convenience, have become almost synonymous with biometrics. Fingerprints refer to the uneven lines on the front of the end of a person's finger. The lines are arranged regularly to form different patterns.
The beginning, end, junction and bifurcation points of the grain line are called the ...... of the fingerprint
Pattern unlocking, password unlocking, face unlocking, after the emergence of many personal security unlocking methods, fingerprint unlocking with a higher security factor has also appeared. So do you know how it works?
Fingerprints, due to their lifelong immutability, uniqueness and convenience, have become almost synonymous with biometrics. Fingerprints refer to the uneven lines on the front of the end of a person's finger. The lines are arranged regularly to form different patterns.
The beginning, end, junction and bifurcation points of the grain line are called the detailed feature points of the fingerprint".
Through the above content, we know that the points formed by interruptions, forks or transitions in the fingerprint are the detailed feature points, and these detailed feature points can be said to provide confirmation information of the uniqueness of the fingerprint. Typical of these are endpoints and bifurcations and divergence points, outliers, ring points, short stripes, and so on. By recording the direction of your fingerprint pattern, the position of the feature point (the position is determined by the x-y axis), etc., you can create a unique fingerprint lock in the world, and the key is your fingerprint.
Because the orientation of each fingerprint scan is not exactly the same, and different focus points will also bring different degrees of deformation, so there will be a large number of blurred fingerprints, so the key to fingerprint recognition technology is to correctly extract features and achieve correct matching. Fingerprint recognition involves many disciplines such as image processing, pattern recognition, computer vision, etc.
To identify fingerprints, the first thing is to create a fingerprint database first, so that your original fingerprint data becomes the initial identification code.
Capacitive fingerprint capture view, through the contact between ** and the screen, identify the texture of the fingerprint to record and verify the fingerprint.
Optical, which records and verifies fingerprints through light-reflecting imaging.
The pressure-sensitive type is an imaging that senses the unevenness of the fingerprint by sensing the pressure-sensitive material of the semiconductor.
After the fingerprint is captured, the fingerprint will be refined to highlight its fingerprint feature points for easy comparison and verification.
Fingerprint verification is a new type of verification method with a better security factor on the mobile phone, because the fingerprint corresponding to the unlocking is only owned by you, and the security of the mobile phone and personal privacy can be effectively protected. So now many mobile phone manufacturers are also rushing to add fingerprint recognition to their mobile phones. Dear, is your phone safe enough?
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Anonymous users2024-02-05Principle: Fingerprint patterns often have breaks, bifurcations, or turns, and these breakpoints, forks, and turns are called"Feature points"。Feature points provide confirmation of the uniqueness of the fingerprint, and it is because of these differences that recognition can be made.
1. The concept of fingerprint recognition:
Fingerprint recognition refers to the technology of identification by comparing the detailed feature points of different fingerprints, which can be used for identification.
2. Advantages and their applications:
Fingerprint recognition technology has the advantages of fast recognition speed, convenient collection and low cost, and is widely used in many disciplines such as image processing, pattern recognition, computer vision, etc.
Fingerprint, the English name is fingerprint, two fingerprints often have the same overall characteristics, but their detailed characteristics, can not be exactly the same. Fingerprint patterns are not continuous, smooth and straight, but are often interrupted, bifurcated, or twisted. These breakpoints, bifurcations, and turning points are called"Feature points"。
NEED NOTICE:
Fingerprints are the lines formed by the concave and convex ** on the fingertips at the end of human fingers, (seemingly) fingerprints can increase friction when the hand touches objects, (in fact, fingerprints reduce friction, make it easier to stretch and deform, so as to avoid injury, see the section on fingerprint uses for details).
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Anonymous users2024-02-04The following description of "digital fingerprint" is wrong, and it is wrong for a product bound to a "digital fingerprint" to reveal your identity and make it impossible to conduct transactions.
As an important branch of information concealment, digital fingerprinting is mainly used for copyright protection, and its research is of great significance. Digital fingerprinting is to embed different iconic identifiers - fingerprints, using digital watermarking technology into the digital **, and then distribute the digital ** embedded with the fingerprint to users. After discovering piracy, the dealer can determine the illegal copy by extracting the fingerprints in the pirated product, and prosecute the pirate, so as to play a role in copyright protection.
Generally speaking, digital fingerprinting refers to information about a user and a certain purchase process. When a publisher discovers an illegal distribution, it can track the users who made the illegal distribution based on this information. The digital fingerprint system consists of two main parts: one is the copy distribution system for embedding fingerprints into copies and distributing copies with fingerprints; The other part is to implement a tracking system that tracks and prosecutes illegal distributors.
Often, the above two parts are implemented through a series of agreements between publishers and users (and possibly entities such as registration centers and adjudicators), so the digital fingerprinting system can also be divided into two parts: algorithms and protocols. Among them, the algorithm includes the encoding and decoding of fingerprints, the embedding and extraction of fingerprints, and the distribution strategy of copies, while the protocol part stipulates how to interact with each other to achieve a copy distribution and tracking system with various characteristics (such as realizing the anonymity of Muyebo users, etc.).
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