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It is a common issue to remove undesirable objects during reconstruction. The holes left behind are then needed to be given plausible information for the integrity. To complete the missing part of a 3D map generated from stereo inputs, the task can be separated into two operations which are repairing the color image and the depth map. In this paper, we design and release a specialized stereo dataset...
This paper presents a new technique to solve the single image super resolution reconstruction problem based on multiple extreme learning machine regressors, called here MELM. The MELM employs a feature space of low resolution images, divided in subspaces, and one regressor is trained for each one. In the training task, we employ a color dataset containing 91 images, with approximately 5.3 million...
Most modern cameras use a color filter array on their sensor in order to capture color images. This array is composed of red, green and blue filters and so, each pixel on the sensor lacks two color channels which can be retrieved by a process called demosaicing. In this paper, we propose a new demosaicing method for plenoptic cameras. This type of cameras has become a growing trend and their captured...
The article describes some questions of functioning of digital cameras with purpose to increase optical resolution of the photos. The presented work includes detailed analysis and comparison of options, possible for nowadays, of improvements of optical resolution. The first offered option — use of the software. In the second option use of other different filters instead of Bayer filter is considered...
Three dimensional (3D) vision applications have drawn more attention nowadays and many products are entering the mass market. View interpolation is a crucial step to generate intermediate viewpoints from reference images. However, it is still challenging to achieve good performance in both processing speed and image quality for various 3D applications. In this paper, a hardware-compatible view interpolation...
Recent studies have shown that panchromatic colour filter arrays possess better light intensity properties than the more prevalent Bayer array. This is an attractive property in integrated camera design. Demosaicking algorithms, however, focus primarily on Bayer-based cameras because of their simple demosaicking process. This paper presents a novel algorithm for use in the RGBW class of panchromatic...
The Raspberry Pi platform provides true equal opportunity-of-use in computing globally. From it, new affordable research and industrial opportunities have emerged. To fully realise its driving potential, particularly in developing countries, a persistent knowledge teaching process for the Raspberry Pi is necessary. This paper presents a quasi-flipped learning model (QFLM) intended to spark critical...
Video frame interpolation typically involves two steps: motion estimation and pixel synthesis. Such a two-step approach heavily depends on the quality of motion estimation. This paper presents a robust video frame interpolation method that combines these two steps into a single process. Specifically, our method considers pixel synthesis for the interpolated frame as local convolution over two input...
We propose Deep Feature Interpolation (DFI), a new data-driven baseline for automatic high-resolution image transformation. As the name suggests, DFI relies only on simple linear interpolation of deep convolutional features from pre-trained convnets. We show that despite its simplicity, DFI can perform high-level semantic transformations like make older/younger, make bespectacled, add smile, among...
Display devices at bit-depth of 10 or higher have been mature but the mainstream media source is still at bit-depth as low as 8. To accommodate the gap, the most economic solution is to render source at low bit-depth for high bit-depth display, which is essentially the procedure of de-quantization. Traditional methods, like zero-padding or bit replication, introduce annoying false contour artifacts...
Image noise, textureless regions, and occlusions are still problems of stereo matching. We propose a novel method to address these problems. Firstly, initial disparity map and reliability map are obtained by stereo matching in the pixel level. In this stage, the proposed approach not only imposes the photo-consistency constraint, but also explicitly associates the geometric coherence to solve the...
We present a new way to combine the propagated flow in image pyramid and dense correspondences from descriptor matching for large displacement optical flow estimation. Because the matches and the flow propagated from the coarser level in image pyramid are possibly wrong, our method uses color-based weighted linear interpolation to reduce the wrong initial flow and alleviate over-smoothing, instead...
Splitting the real time image of size P x Q into four enlarged image blocks without zooming. Each splitted image blocks are interpolated to the dimension of the original image without blurring and display image in four different screens. The design is implemented using the simulink, system generator module and finally on the FPGA. In this paper, techniques for splitting and enlarging an image are...
The obstacles for images that are taken under the water are haze, low contrast, loss of color, etc. The quality of images that are taken under the water is not clear due to the impurities present in the water and some properties of water. This paper proposes methods to improve the quality of the underwater images. The proposed work in the paper consist of two methods they are Interpolation based Enhancement...
A single sensor camera can capture scenes by means of color filter array. Each pixel samples only one of the three primary colors. Color demosaicking (CDM) is a process of reconstruction a full color image from this sensor data. In this paper, we propose a novel CDM scheme based on learned simultaneous sparse coding over nonlocal tensor representation. First, similar 2D patches are grouped to form...
With the dawn of the digital era and online availability of multimedia, cases like copyright infringement, violation of intellectual property rights and breach of privacy are not so rare. Consequently one has to find out the culprit responsible for such illegal actions. This work presents a passive approach based on intrinsic signature of in-camera color filter array (CFA) interpolation to classify...
This paper first discusses the radial basis functionand the related interpolation theory, with MQ, inverse MQ andthe Gauss radial basis functions as the main investigation objects. Based on the radial basis function interpolation, the gray imagemagnification algorithm is presented on the basis of the discreteand continuous block format. And the same time, the indicationof global fidelity is constructed...
Plenoptic cameras which can capture both spatial and angular light information by one shot have attracted great interests. Compared with traditional cameras, a plenoptic image has large resolution and enormous amounts of microlens images. Due to huge volume of data, an efficient plenoptic image compression method for transmission and storage is required. In this paper, a novel plenoptic image compression...
We present a unified framework for dense correspondence estimation, called Homography flow, to handle large photometric and geometric deformations in an efficient manner. Our algorithm is inspired by recent successes of the sparse to dense framework. The main intuition is that dense flows located in same plane can be represented as a single geometric transform. Tailored to dense correspondence task,...
In free viewpoint video (FVV) framework, a large number of viewpoints from limited number of views are generated to reduce the amount of transmitting, receiving and processing video data significantly. To generate a virtual view, the disparity among adjacent views or temporal correlation between different frames of the intermediate views are normally exploited. Those techniques may concern poor rendering...
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