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This paper presents GIMME2, an embedded stereovision system, designed to be compact, power efficient, cost effective, and high performing in the area of image processing. GIMME2 features two 10 megapixel image sensors and a Xilinx Zynq, which combines FPGA-fabric with a dual-core ARM CPU on a single chip. This enables GIMME2 to process video-rate megapixel image streams at real-time, exploiting the...
Even with the availability of high-resolution color imaging sensors, there are certain limitations in using the visible light band. For instance, visible light easily scatters causing haze in images. The near-infrared (NIR) band offers a viable alternative for such applications. Previous work have demonstrated the uses of NIR in combination with high-resolution colored images. However, the use of...
Coded aperture imaging presents an interesting approach to single-image depth extraction. Existing approaches use depth-dependent color misalignment brought about by color coded apertures to calculate the depth map of an image. The depth map itself is not directly calculated from the image but is taken by estimating the disparity for a given shift in the color channels. Earlier measures of color disparity...
We focus on the road-to-vehicle visible light communication that system is composed of LED matrix as transmitter and high-speed camera as receiver. In proposed method, there are two problems. First problem is in case of long distance. It is difficult to receive data correctly because neighboring LEDs on the received image are merged due to less number of pixels and/or blurring by defocus. In this...
In this study, we estimate gaze direction using the relationship between the face and eyes. The face and eyes are divided laterally and in lengthwise direction. We set up an object laterally and in lengthwise direction and measured the face angle using a Kinect sensor, which is range image sensor, when gazing at an object. The angle of the eyes is fixed at the angle of the object and grasp of the...
The major developments in digital imaging are provided thanks to the development of a digital image sensor. Camera arrays are one of the studies in this area. The camera array is formed by combining a many image sensors having the same characteristics. High resolution and high speed imaging systems can be obtained by using camera arrays. In this paper, a new feature extraction based image stitching...
In this paper we describe a 2D/3D vision sensor, which consists of a laser triangulation sensor and matrix colour camera. The outcome of this sensor is the fusion of the 3D data delivered from the laser triangulation sensor and the colour information of the matrix camera in the form of a coloured point cloud. For this reason a novel calibration method for the laser triangulation sensor was developed,...
MIMO is popular technique which can improve the reliability and spectral efficiency of RF communication system by using the spatial link dimensions. It is also an attractive option solution for achieving high data rate. Optical Camera Communication (OCC) is considered for revision specification of visible light communication standard. One of the most consideration disadvantages of OCC is data rate...
Image sensor communication (ISC) has become more imperative for the technology lover by virtue of the development of image sensors in the camera. Lately, Digital signage technology has become one of the most flourished industry for ISC technology as it has uncovered a lot of opportunities such as interactivity, dynamic content provisioning and so on. Granting all this opportuneness, there are some...
Intention for using color in image sensor communication (ISC) has become trendy issue due to its specific limitations. This paper suggests a color transmission technology to minimize the blur effects in the ISC. We propose an asynchronous communication using display as a transmitter and rolling shutter camera as a receiver to measure the blur effect. The interruption due to the blur effects in the...
In this paper we propose a novel method for depth estimation based on a single recording of a focused plenoptic camera. The presented algorithm is based on multiple stereo-observations within the multi-view micro images of the focused plenoptic camera. Here, pixel correspondences are found based on local intensity error minimization. Since our algorithm works directly on the micro images, no sub-aperture...
This paper explains and clears out the fundamental characteristics of the visible light communication system using rolling shutter mechanism of CMOS sensor and the relationship between them. Then the system performance, defined in terms of data rate and signal to noise ratio is analyzed. Finally the simulation is conducted to verify the analysis.
Optical Camera Communication (OCC) is considered as an extension of IEEE 802.15.7 specification by same communication channel. Different with another technique, Optical Camera Communication used image sensor for receiver, so the characteristic of image sensor will effect on the operation and performance. In this paper we analyze and discuss the performance image sensor characteristic which based on...
A methodology for acquisition and preprocessing of real-world data, necessary for the development of classification algorithms dedicated to fall detection, is proposed. Raw measurements are acquired by means of infrared depth sensors. Their preprocessing consists of two main operations: extraction of the silhouette from the depth image and estimation of the coordinates of the center of that silhouette...
We present a method for motion-picture femtophotography that performs continuous, single-shot, burst image acquisition without the need for repetitive measurements. We capture the dynamics of laser ablation and phonon propagation with the imaging method.
In this study, this paper focuses on the vision-based unmanned aerial vehicle (UAV) autonomous guided landing system's calibration problems. We combine multisensory to propose a fast calibration method in proceeding of autonomous landing of a UAV with ground-based multisensory fusion systems. The system components include image sensor, ultra-wideband radar (UWB), distance measurement module, two-axis...
We describe an image acquisition system based on an integrated dual-sensor with a visible and infrared spectrum, which enables a multimodal biometric system, including non-intrusive iris recognition. To implement this as capable of simultaneously acquiring facial and iris images, a beam splitter for reflecting or transmitting visible and infrared light representing an image of a target object is used...
Linear transformations are widely used in the color science. Linear transformation can not ideally map the source and destination color matching functions and this issue induces some errors in the process of conversion. This error is usually deemed negligible for a noise-free system. However, in practice, imaging devices, displays, and printers employ linear transformations to move between color spaces...
In this paper we present an innovative method for counting people from zenithal mounted cameras. The proposed method is designed to be computationally efficient and able to provide accurate counting under different realistic conditions. The method can operate with traditional surveillance cameras or with depth imaging sensors. The validation has been carried out on a significant dataset of images...
Ray-Space/Light Field is a novel representation of 3-D visual information that enables 3D/free-viewpoint photorealistic image generation. Although it is based on a clear and simple concept, and hence, it is expected to be a basic representation for 3D end-to-end systems, it has the problem that there exists no easy way to obtain Ray-Space data efficiently. In this paper, we first describe the basic...
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