شرکت بهسان اندیش تولید کننده سامانه های هوشمند مفتخر به تولید یکی از دقیقترین و سریعترین سامانه های جامع کنترل تردد خودرو می باشد که می توانید جهت آشنایی با قابلیت ها و امکانات این محصول به لینک :سامانه جامع کنترل تردد خودرو بهسان(پلاک خوان) مراجعه فرمایید.
ﺭﻭﺷﯽ ﺟﺪﻳﺪ ﻭ ﺳﺮﻳﻊ ﺑﺮﺍﯼ ﺗﺸﺨﻴﺺ ﻣﺤﻞ ﭘﻼﮎ ﺧﻮﺩﺭﻭ ﺍﺯ ﺗﺼﺎﻭﻳﺮ ﭘﻴﭽﻴﺪﻩ ﺑﺮ ﺍﺳﺎﺱ ﻋﻤﻠﻴﺎﺕ ﻣﻮﺭﻓﻮﻟﻮﮊﻳﮑﯽ
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شناسایی پلاک خودروهای ایرانی با روش جایابی فازی پلاک
چکیده– یکی از مهم ترین زیرسامانه های حمل و نقل هوشمند، سامانه ی تشخیص و شناسایی پلاک خودرو است. دشواری تشخیص و شناسایی صحیح پلاک خودرو در شرایط مختلف محیطی موجب شده تا پژوهش در این زمینه ی پژوهشی هم چنان ادامه داشته باشد. مسئله ی تشخیص پلاک خودرو را می توان به سه زیر مسئله ی “جایابی پلاک”، “استخراج نویسه های پلاک” و “شناسایی نویسه ها” تقسیم کرد. در این مقاله تلاش شده به کمک قواعد فازی، الگوریتم های جایابی پلاک خودروهای ایرانی و شناسایی نویسه های آن بهبود یابد. جایابی پلاک با لبه یابی، تحلیل ریخت شناسانه و استفاده از قواعد فازی و شناسایی نویسه ها با استفاده از ماشین بردار پشتیبانی فازی انجام شده است. با آزمایش الگوریتم یاد شده بر روی پنجاه تصویر صحت جایابی پلاک خودرو 90 درصد و صحت شناسایی نویسه ها 94 درصد به دست آمد که در مقایسه با روش های مرسوم توانمندی چشمگیری دارد.
کلمات کلیدی– پلاک خودروف شناسایی الگو، ماشین بردار پشتیبانی، نظریه ی فازی.
فایل PDF – در 10 صفحه- نویسندگان : غلامعلی منتظر و محمد شایسته فر
شناسایی پلاک خودروهای ایرانی با روش جایابی فازی پلاک
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Vehicle License Plate Identification & Recognition
شناسایی و به رسمیت شناختن شماره پلاک خودرو
Abstract- Existing vehicle license plate identification and recognition systems are potent for either their accuracy
or speed but not a combination of both. The algorithm proposed in this dissertation attempts to achieve
this fine balance between the accuracy and speed that such a system must posses. The mathematical
morphology operators of dilation and erosion are utilized to identify the region within an image which
contains the license plate. Using the concept of color coherence vectors, an image recognition algorithm
is presented which utilizes this extracted region and compares it as a whole to other images of license
plates, in the database. The application developed for the testing of this algorithm works with an
accuracy of eighty eight percent and an average processing time of two seconds per image.
Key Words and Phrases: Vehicle license plate recognition, color coherence vectors, mathematical
morphology
فایل PDF – در 10 صفحه- نویسندگان : SANJAY GOEL, PRIYANK SINGH
Vehicle License Plate Identification & Recognition
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Sensor network based vehicle classification and license plate identification system
طبقه بندی وسایل نقلیه بر اساس شبکه حسگر و سیستم شناسایی پلاک وسایل نقلیه
Abstract—Typically, for energy efficiency and scalability purposes, sensor networks have been used in the context of environmental and traffic monitoring applications in which operations at the sensor level are not computationally intensive. But increasingly, sensor network applications require data and compute intensive sensors such video cameras and microphones. In this paper, we describe the design and implementation of two such systems: a vehicle classifier based on acoustic signals and a license plate identification system using a camera. The systems are implemented in an energy-efficient manner to the extent possible using commercially available hardware, the Mica motes and the Stargate platform. Our experience in designing these systems leads us to consider an alternate more flexible, modular, low-power mote architecture that uses a combination of FPGAs, specialized embedded processing units and sensor data acquisition systems.
Keywords: wireless sensor networks, seismic, acoustic vehicle classification, license plate detection
فایل PDF – در 4 صفحه- نویسندگان :Jan Frigo, Vinod Kulathumani, Sean Brennan∗, Ed Rosten, Eric Raby
Sensor network based vehicle classification and
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Real Time Automatic License Plate Recognition in Video Streams
تشخیص خودکار زمان واقعی شماره پلاک وسایل نقلیه در جریان های ویدیویی
Abstract
In recent years there has been an increased commercial interest in systems for automatic license plate recognition. Some of the existing systems process single images only, some even requiring vehicles to stop in front of a gate so that a still image of good quality can be taken. This thesis presents an approach that makes it possible to process 25 images per second on a standard PC from 2004, allowing identication decisions to be based on information from several images instead of just a single one. Thus, the impact of a single bad image is reduced, and vehicles can be allowed to drive past the camera without hindrance. In order to reach the necessary processing speed, a simplied StauerGrimson background estimation algorithm has been used, enabling the system to only search for license plates on objects that are in motion. The main method for nding license plates has been a computational-wise economical connected component labeling algorithm. A basic pixel-by-pixel comparison OCR algorithm %has also been implemented. A real life test running for twelve days has shown the complete system to have a rate of successful identification at 80 .
فایل PDF – در 28 صفحه- نویسنده : Fredrik Trobro
Real Time Automatic License Plate Recognition
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Proposal for Automatic License and Number Plate Recognition System for Vehicle Identification
طرح پیشنهادی برای سیستم شناسایی خودکار شماره پلاک و مجوز برای شناسایی خودرو
Abstract— In this paper, we propose an automatic and mechanized license and number plate recognition (LNPR) system which can extract the license plate number of the vehicles passing through a given location using image processing algorithms. No additional devices such as GPS or radio frequency identification (RFID) need to be installed for implementing the proposed system. Using special cameras, the system takes pictures from each passing vehicle and forwards the image to the computer for being processed by the LPR software. Plate recognition software uses different algorithms such as localization, orientation, normalization, segmentation and finally optical character recognition (OCR). The resulting data is applied to compare with the records on a database. Experimental results reveal that the presented system successfully detects and recognizes the vehicle number plate on real images. This system can also be used for security and traffic control.
(Keywords— License and number plate recognition (LNPR) system, image processing, orientation, normalization, segmentation, identification, optical character recognition (OCR
فایل PDF – در 5 صفحه- نویسنده : Hamed Saghaei
Proposal for Automatic License and Number Plate
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LICENSE PLATE MATCHING TECHNIQUES
تکنیک های انطباق پلاک وسیله نقلیه
فایل PDF – در 42 صفحه- نویسنده : U.S.Department of Transportation-Federal Highway Administration(وزارت راه و ترابری آمریکا-مدیریت بزرگراه فدرال)
LICENSE PLATE MATCHING TECHNIQUES
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Development of a New Automatic License Plate Recognition (LPR) System
توسعه یک سیستم تشخیص پلاک خودکار جدید
ABSTRACT In Japan, automatic license plate recognition systems have been used for more than ten years for the purposes of measuring the travel time of vehicles and for some applications which need detailed plate information identification. Due to their efficacy, they are now being utilized throughout the country. Ordinarily, compared to when used for travel time measurements, considering the types of uses for the number information, higher recognition accuracy is often desired when used for some applications which need detailed plate information identification. We have advanced the development of number plate reading for the purpose of travel time measurement applications, refining these technologies for their application to other various applications. In order to fulfill the requirements expected to be met for various applications, we have implemented a variety of innovations in both software and hardware and developed a new LPR system that has many features such as high recognition rate, low false rate, compact design and high reliability by image processing algorithms and an advanced camera unit. We will seek to expand abroad by applying these technologies.
KEYWORDS: Automatic license plate recognition, Automatic number plate recognition, Automatic vehicle identification, Image processing, Vehicle detection, Plate extraction, Character recognition
فایل PDF – در 10 صفحه- نویسنده : Takehiko Kato ,Masatoshi Asada , Kayo Tanaka , Yusuke Yasuhara, Toshihiro Asai , Yasuo Ogiuchi
Development of a New Automatic License Plate Recognition (LPR) System
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Development of a License Plate Number Recognition System Incorporating LowResolution Cameras
توسعه یک سیستم شناسایی شماره پلاک شامل دوربین های با رزولوشن پایین
A multi-lane free flow (MLFF) toll collection system installed on a simplified gantry requires compact cameras for supervising enforcement. Because these compact cameras have low image resolution, it is also necessary to develop vehicle license plate recognition technology that uses dynamic image processing. Mitsubishi Heavy Industries, Ltd. (MHI) has developed three technologies based on the conventional license plate recognition system using still images; these technologies improve image quality, process plural images of a single vehicle, and utilize a reference database. Laboratory evaluation tests have verified that even a lowresolution camera system can successfully recognize license plate numbers at a rate of 95% or better, comparable to results from the conventional still image system. MHI is enhancing system robustness to enable application of these technologies to actual products.
فایل PDF – در 5 صفحه- نویسنده : KENTA NAKAO, KIICHI SUGIMOTO, MAYUMI SAITOH, TAKUMA OKAZAKI
Development of a License
پسورد فایل : behsanandish.com
Automatic Number Plate Recognition System
سیستم شناسایی شماره پلاک خودکار
Abstract. Automatic recognition of car license plate number became a very important in our daily life because of the unlimited increase of cars and transportation systems which make it impossible to be fully managed and monitored by humans, examples are so many like traffic monitoring, tracking stolen cars, managing parking toll, red-light violation enforcement, border and customs checkpoints. Yet it’s a very challenging problem, due to the diversity of plate formats, different scales, rotations and non-uniform illumination conditions during image acquisition. This paper mainly introduces an Automatic Number Plate Recognition System (ANPR) using Morphological operations, Histogram manipulation and Edge detection Techniques for plate localization and characters segmentation. Artificial Neural Networks are used for character classification and recognition.
2010 Mathematics Subject Classification. Primary 68T10; Secondary 68T45.
Key words and phrases. license plate recognition, plate region extraction, segmentation, neural networks, optical character recognition, Hough transform, ANPR.
فایل PDF – در 10 صفحه- نویسنده :Amr Badr, Mohamed M. Abdelwahab, Ahmed M. Thabet, and Ahmed M. Abdelsadek
Automatic Number Plate Recognition System
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Automatic License Plate Recognition
شناسایی شماره پلاک خودکار
فایل PDF – در 5 صفحه- نویسنده :Jason Grant
Automatic License Plate Recognition
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A Real-Time Mobile Vehicle License Plate Detection and Recognition
یک تشخیص و ردیابی شماره پلاک وسایل نقلیه موبایل زمان واقعی
Abstract
In this paper we present a instant and real-time mobile vehicle license plate recognition system in an open environment. Using a nonfixed video camera installed in the car, the system tries to capture the image of the car in front and to process instant vehicle license plate detection and recognition. We utilize the color characteristics of the barking lights to carry out license plate detection. We first detect the location of the two barking lights in the captured image. Then set license plate detection region using the probability distribution of the license plate between the two lights. This method can eliminate any environmental interference during the license plate detection and improve the rate of accuracy of license plate detection and recognition. Moreover, we use the morphology method Black Top-Hat to enhance the level of separation of the license plate characters. Experiments show that the system can effectively and quickly capture the vehicle image,detect and recognize the license plate whether it is in daytime, nighttime, clear day, raining day or under complicated environment.
Key Words: Real-Time, Wavelet, License Plate, Black Top-Hat
فایل PDF – در 10 صفحه- نویسنده :Kuo-Ming Hung and Ching-Tang Hsieh
A Real-Time Mobile Vehicle License Plate
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