نتایج جستجو برای: speed camera
تعداد نتایج: 258708 فیلتر نتایج به سال:
Single-molecule switching nanoscopy overcomes the diffraction limit of light by stochastically switching single fluorescent molecules on and off, and then localizing their positions individually. Recent advances in this technique have greatly accelerated the data acquisition speed and improved the temporal resolution of super-resolution imaging. However, it has not been quantified whether this ...
To improve traffic safety, an automatic traffic sign detection system would be important to assist the driver. In this paper, an approach for detecting Norwegian speed limit signs is proposed. It consists of three major steps: Color-based filtering, locating sign(s) in an image and detection of numbers on the sign. About 91% correct recognition is achieved for a selection of 198 images. Ongoing...
For many applications in machine vision, digital photogrammetry and scientific research image sequences of rapidly moving objects have to be acquired with high temporal resolution. If the standard video rate (30 frames/sec NTSC resp. 25 frames/sec CCIR) is not sufficient, high-speed solid state cameras may be considered offering frame rates of up to 15,000 frames per second. As the processing o...
Imaging Laser Doppler Velocimetry (ILDV) is a flow measurement technique which facilitates the measurement of one velocity component of a flow field in an imaging plane. It is an evolution of Heterodyne Doppler Global Velocimetry and may be regarded as the planar extension of the classical dual beam LDV by crossing two light sheets in the flow instead of focused laser beams. With different ligh...
This paper describes a novel interaction technique that recognizes a finger flicking gesture for power adjustment input for a sports game, such as golf swing or hitting. Our system measures speed of the finger motion and direction of the gesture by using a high-speed camera and a high frame rate image processing technique. By using this system, users can adjust power and angle intuitively. We d...
This paper reviews some attempts that exploit a phenomenon, also known as motion parallax, to estimate the distance of closest approach of a moving object. Despite their success, the existing methods lack some desirable properties, such as reasonable scalability and online learning. To overcome these practically-relevant limitations, this paper proposes a new model that is based on Hebbian lear...
Outlines: 1. The first order (conceptual optics) design has been done by Kirk McDonald. Critical components have been purchased. The second order (engineering details) design is in progress. 2. Bench tests for the camera image capture speed have been done at BNL. 3. Instrument, component bench test and their integration with hardware and software are in progress. 4. The larger scale bench test,...
Practical techniques are required to monitor invasive animals, which are often cryptic and occur at low density. Camera traps have potential for this purpose, but may have problems detecting and identifying small species. A further challenge is how to standardise the size of each camera's field of view so capture rates are comparable between different places and times. We investigated the optim...
This paper describes a pipeline analog-to-digital converter is implemented for high speed camera. In the pipeline ADC design, prime factor is designing operational amplifier with high gain so ADC have been high speed. The other advantage of pipeline is simple on concept, easy to implement in layout and have flexibility to increase speed. We made design and simulation using Mentor Graphics Softw...
Video cameras offer the unique capability of collecting high density spatial data from a distant scene of interest. They could be employed as remote monitoring or inspection sensors because of their commonplace use, simplicity, and relatively low cost. The difficulty is in interpreting the video data into a usable format, such as displacement, that is familiar to engineers. A methodology called...
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