From 3D movies, to 3D TVs, to our 3D fingerprint attendance machines, it seems that the concept of 3D has begun to spread across our various corners. Nowadays, 3D technology is once again moving toward face recognition applications, and for this time 3D In terms of further development, what can it bring us? Is perfect? Or tangled? Face recognition across 3D applications
If biometric access control is to be achieved, then one step should be achieved. Fingerprint recognition is more suitable for time and attendance. As face recognition system, face recognition can be used to better identify frauds and achieve safety first. The basic principle of 3D face recognition is based on a person's face. The unique geometric shape biometrics can be easily stored in a database. When compared with "live" face facial features, if the data is accurate, it will be accepted. control. 3D face recognition is fast and accurate, and non-contact recognition is also based on this feature to meet the needs of access control access control systems.
Up till now, research on face recognition for the unit is still in its infancy, and practical applications rarely integrate with this recognition technology. Capturing and storing 3D templates is more complex than 2D technology and it is also a cost-effective application compared to many biometrics, but it is still listed as a truly viable program to be developed.
Experts in the industry believe that 3D identification can truly achieve one-on-one access control, especially in combination with surveillance video for forensic applications, has a significant advantage.
Face recognition 3D road
In fingerprinting, the introduction of 3D technology introduces a deeper level of recognition. The recognition from the epidermis to the subcutaneous tissue also greatly improves the recognition efficiency and safety of the device. For face recognition, its R&D direction is based on a normal face in a 3D perspective, and then the features of the face are stored in a database in a geometric form. When the real human face enters the system for comparison, the 3D data will perform full-scale matching of the actual sample, thereby reducing the occurrence of false positive events.
From a theoretical point of view, the recognition speed of 3D recognition in verification may be slightly lower than some ordinary face attendance machines. However, from the overall effect point of view, this one-to-one comparison can also more technically improve the accuracy of device identification, thus improving the efficiency of 3D face recognition device independent work.
It can be said that the introduction of 3D technology for face recognition will make the verification process more three-dimensional and more comprehensive. So in practical applications, can 3D recognition be as smooth as we think?
PC plastic,full name Polycarbonate.
PC plastic is a kind of excellent comprehensive performance engineering plastics.It has excellent physical, mechanical, electrical, and thermal properties,so it's known as the "king of the transparent plastic'
Classification:
Anti - static PC SHEET, conductive PC SHEET,fireproof PC SHEET,PC fiber - resistant, PC GF SHEET, PC+ABS SHEET,anti-ultraviolet ray resistance PC, food grade PC, anti - chemical PC.
Advantages:
1,Light weight
2,Impact resistance
3,Excellent physical, mechanical, electrical and thermal properties
4,Ultraviolet resistance
Disadvantages:
Polycarbonate is not resistant to ultraviolet light, no resistance to alkali, resistance to hydrolysis stability is not high, is the main performance defect is sensitive to the gap, resistance to organic chemistry, scratch resistance is poorer, long-term exposure to ultraviolet light yellow, are vulnerable to the erosion of some organic solvents.
Applications:
1. Dust-free room spacer
2. Equipment shield and test fixtures;
3. Commercial Building Lighting;
4. Soundproof walls;
5. Greenhouse;
6. Components for medical and pharmaceutical devices;
7. Face shields;
8. Skylights, etc
Modified use:
The purpose of the modified PC Plastic is to toughen, improve the processing performance, reduce the residual deformation, and increase the flame retardancy, etc.
PC/ABS can improve bending modulus, heat resistance and plating performance.
PC/PET and PBT can improve drug resistance and solvent resistance.
PC/PMMA added plexiglass to enhance the appearance of pearlescent color.
PC/PA and HIPS can improve impact toughness and surface finish.
PC/HDPE can improve water resistance, aging resistance, weather resistance and LDPE.
The PC Plastic USES fiberglass or carbon fiber to enhance modification and improve mechanical strength.
The flame retardant grade PC Plastic can be made with bromine flame retardant and antimony trioxide.
Other and polysulfone, aromatic polycarbonate, polyvinyl formaldehyde, polypropylene, polystyrene can be modified to achieve the balance between economy and performance.
Combustion characteristics:
Combustion condition: easy, softening foaming
Flame status: small amount of black smoke
After the fire: out of the fire
Bouquet: no special taste
Specification: the thickness of PC Plastic sheet material can be produced from 0.3mm to 1.9mm, the normal width is 600mm, the width cannot exceed 1200mm, the length is not limited.
The thickness of plate can be produced from 2mm to 180mm, the usual specification of 2-10mm is 1000mm* 2000mm, and the commonly used specification of 10-180mm is 600*1200 mm. PC Plastic sheet can also be customized according to requirements, and the width cannot exceed 1200mm, and the length is not limited.and The diameter of the PC Plastic rod can be produced from 2mm to 250mm, the length is 1 meter, and it can be ordered to be more than 3 meters in length.
Color: Black and clear, can also be made another color, and the color order is 500KG.
Modified varieties:PC Plastic can be added to the Glass Fiber, copper powder, and molybdenum disulfide enhancement plate according to customer's requirements.
Add antistatic agent to the permanent plate, the volume resistance value of 10 to the 6 to 9 power.
Add flame retardant to the flame retardant board from UL 94v-0 to HB combustion grade, and other modification requirements are required to customize various additional properties according to the actual use of the customer.
Product certification: most environmental certification reports and safety reports for raw materials, such as SGS report, CTI report, UL report, MSDS safety information, etc.
PC Plastic Sheet,Esd PC Plastic Sheet,Fireproof PC Plastic Sheet,Abs Plastic Sheet
Dongguan Noegem Plastic Products Co.,Ltd , http://www.noegempLastic.com