Detecting Visual Codes ( May 2006 )
نویسنده
چکیده
The detection of binary visual codes is an integral commercial application of computer vision, facilitating the transmission of digital information from the physical to the electronic domains. Our detection method uses repeated elimination of image areas to identify likely guide bars. Guide bars are used to predict the locations of the bounding bits, and further calculation yields a refined estimate of the code’s location and bit values. Final processing eliminates candidate visual codes that do not fit the fixed pattern to a high enough degree.
منابع مشابه
مطالعه تطبیقی لوگوتایپهای مصور مطبوعاتی و نشانههای فرهنگی در شعر دوره مشروطه
Iranian graphic designers made their first efforts to create modern logotypes, called Sar- Onvan (Subtitle), in Qajar era. These works, which are considered as important parts of the background of Iranian graphic design, worth adequate attention; through studying them, we may discover their special visual expressions leading us to a better understanding of the specific social situation in Qajar...
متن کاملProximity Detecting Codes ( Preliminary
A t-proximity detecting (t-PD) code can detect when a received word is at distance t from the transmitted codeword. For non-trivial values of t, a t-proximity detecting code must be unordered. However, not all unordered codes are t-proximity detecting. This report characterizes t-proximity detecting (t-PD) codes, and presents some properties of such codes. Designs of t-PD codes and lower bounds...
متن کاملGPS Jamming Detection in UAV Navigation Using Visual Odometry and HOD Trajectory Descriptor
Auto-navigating of unmanned aerial vehicles (UAV) in the outdoor environment is performed by using the Global positioning system (GPS) receiver. The power of the GPS signal on the earth surface is very low. This can affect the performance of GPS receivers in the environments contaminated with the other source of radio frequency interference (RFI). GPS jamming and spoofing are the most serious a...
متن کاملAn approach to fault detection and correction in design of systems using of Turbo codes
We present an approach to design of fault tolerant computing systems. In this paper, a technique is employed that enable the combination of several codes, in order to obtain flexibility in the design of error correcting codes. Code combining techniques are very effective, which one of these codes are turbo codes. The Algorithm-based fault tolerance techniques that to detect errors rely on the c...
متن کاملNon-linear Residue Codes for Robust Public-Key Arithmetic
We present a scheme for robust multi-precision arithmetic over the positive integers, protected by a novel family of non-linear arithmetic residue codes. These codes have a very high probability of detecting arbitrary errors of any weight. Our scheme lends itself well for straightforward implementation of standard modular multiplication techniques, i.e. Montgomery or Barrett Multiplication, sec...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2006