High-speed camera with internal real-time image compression

We describe a high-speed, high-resolution, and real-time scanning measurement system consisting of a linear laser, a smart camera, a PC and the corresponding software. The smart camera with high-speed processing capability could process the image of the object to be measured which is illuminated by the laser to get the data about the shape of the object's cross-section profile in real time. We just need to transport the measured data rather than the huge number of original image to PC for archiving or other application. By the relative motion between the system and the object, we can get a series of data about the whole object's profile which can be reconstructed in the PC by corresponding application software. The system was designed to be installed on the vehicles. With the moving of the vehicle we can get the shape of the road.

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“…In high-speed imaging CMOS image sensor presents some advantages in comparison with CCD image sensors that we summarize [3] :…”

Section: Cmos Image Sensor [1]mentioning

confidence: 99%

High-speed, high-resolution, real-time road shape scanning measurement

Ren

Wei

2011

2011 International Conference on Optical Instruments and Technology: Optoelectronic Imaging and Processing Technology

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“…The outstanding characteristic of CCD is based on the charge signal, it is different from most other devices based on current or voltage signal, CCD's basic function includes the storage, transmission and detection of charge. Since the CCD has the ability to self-scanning, the spatial distribution of light intensity changes with the moiré fringe signals, photoelectric signal phase corresponds to moiré fringe phase [3][4][5][6].…”

Section: The Moiré Fringe Collection and Anometer Subdivisionmentioning

confidence: 99%

All Digital Nanometer Subdivision Method to Process Coarse Grating Signal

Liu

et al. 2010

AMR

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The high resolution and wide measurement range are important for the displacement measurement based on the grating moiré fringe at present. 50lines/mm coarse grating scale is chosen often in order to carry out the wide range. Therefore, the realization of the high resolution is a difficult problem for coarse grating scale. The paper proposes a new nanometer subdivision method with CCD based on the disadvantages of previous moiré fringe collection method. CCD replaces the traditional photoelectric triode and converts moiré fringe to the pixels signal output, which can improve the moiré fringe quality of grating scale. The pixel is the basis unit of CCD; the pixel number decides directly the measurement resolution and precision. The paper chooses the liner array CCD TCD1501C that has 5000 pixel units and 7μm pixel unit，which ensures the nanometer resolution. The output signals of CCD are processed by amplifier, filter, 12 bit analog-digital converter and sent to the core processor of FPGA. The FPGA consisted of all digital system including CCD driver, subdivision, identification direction, displacement calculation, display and key control functions. The paper gave the principle of nanometer subdivision, block diagram of FPGA module and simulation waveforms.

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High-speed camera with internal real-time image compression

Cited by 2 publications

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High-speed, high-resolution, real-time road shape scanning measurement

High-speed, high-resolution, real-time road shape scanning measurement

All Digital Nanometer Subdivision Method to Process Coarse Grating Signal

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