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In order to minimize the processing time and maintain the color palette, simplify the processing of, our research category the available colors into primary color the colors from the photographic processing by Error Diffusion, the research will use the color space HSL as color model to build the error diffusion application which designed for available and limited colors to making fine arts such as...
The paper evaluates quality of medical image fusion by measuring definition of fused image and the amount of edge and texture information transferred from source images to fused image. Considering the unique characteristic of medical image, expert knowledge is brought into the model to weight source images during the process of evaluation. Experiments prove that, the model can accomplish tasks of...
This paper presents a novel for Landsat TM Image processing. It can be used to quantitative simulating each band reflectance of TM image. On the basis of non- destruction of the original band spectral features, it improved single band information and visual sensitivity. The reconstructed Image quality were analyzed using image quality assessment indexes, and the results showed that the image enhancement...
In this paper, we propose an adaptive de-interlacing algorithm that is based on the degree of local complexity. Conventional intra-field de-interlacing methods which achieve good performance in terms of image quality have also higher computational burden; in addition, they show the different performance according to the ways of finding the edge direction. To develop a low-complexity de-interlacing...
In mixed-resolution (MR) stereoscopic video, one view is presented with a lower resolution compared with the other one; therefore, a lower bitrate, a reduced computational complexity, and a decrease in memory access bandwidth can be expected in coding. The human visual system is known to fuse left and right views in such a way that the perceptual visual quality is closer to that of the higher-resolution...
This paper describes objective and subjective display-related measurement methods to evaluate the performance of a laser illuminated head tracked auto-stereoscopic display. Essential characteristics are speckle, exit pupils and crosstalk. The described methods are used to evaluate a first prototype of an auto-stereoscopic display developed within the European Union-funded HELIUM3D project.
Recent trend of bigger and high resolution mobile display for smart-phone leads the needs of high performance of power saving technologies. Among those technologies, the representative technology is PenTile L6W technology which uses RGBW pixel and sub-pixel rendering algorithm. In this paper, the PenTile L6W and the other technologies are introduced. To achieve this power saving, display pixel structure...
Image contrast enhancement methods play a key role in many image processing and vision applications. For surveillance applications, real-time contrast improvement over the whole image is required when videos are taken in poor lighting conditions. It is also necessary to highlight details in shadowed regions without introducing artifacts. In this paper, several state-of-the-art contrast enhancement...
In this paper, a non-contact approach to roundness measurement using machine vision is proposed. A test-rig and computer algorithm are developed to realised the approach. The computer algorithm employs minimum zone circle MZC technique to measure the roundness deviation. High contrast and good quality image segmentation is produced with the developed image processing algorithm technique. Camshaft...
In this work we present an effective and computationally simple algorithm for image compression based on Hilbert Scanning of Embedded quadTrees (Hi-SET). It allows to represent an image as an embedded bitstream along a fractal function. Embedding is an important feature of modern image compression algorithms, in this way Salomon in [1, pg. 614] cite that another feature and perhaps a unique one is...
Mobile optical wireless has so far been limited to very short ranges for high data rate systems. It may be feasible to overcome the data rate limitations over large transmission range in optical wireless through camera receivers and light emitting transmitter arrays through a concept what we call “visual MIMO”. In this concept multiple transmit elements of a light emitting array (LEA) are used as...
A Printed photograph cannot be used to recover the original digital image with improved accuracy because of distortions introduced during the process of scanning the printed material. This paper describes a method to recover the original digital images from the print-scan channel with improved quality. We solve this approximation problem by formulating a method for approximating the original digital...
Iterative image reconstruction for positron emission tomography (PET) can improve image quality by using spatial regularization that penalizes image intensity difference between neighboring pixels. The most commonly used quadratic penalty often over-smoothes edges and small objects in reconstructed images. Non-quadratic penalties can preserve edges but may introduce piece-wise constant blocky artifacts...
This paper presents a VGA 1/13-inch system-on-chip (SoC), primarily targeted for the consumer camera mobile phone market. In this market low cost, ease of product integration, low module height, and low light image quality are important features. The SoC simplifies integration of the sensor into the final product by providing camera functions such as: automatic exposure control, automatic white balance,...
This paper proposes a high dynamic range rendering method which consists of local luminance correction and global luminance correction. The proposed method estimates the change in the global luminance caused by the local luminance correction in advance, and sets an approximate gamma value for each pixel. The local luminance correction and the global luminance correction are combined to reduce the...
Stereoscopic images have been widely studied in recent years from a technical point of view, but the related quality assessment does not follow this enthusiasm. An objective quality assessment method for serious noised stereoscopic images is proposed. It is based on 2D quality evaluation and the characteristics of stereoscopic images. The disparity map for stereoscopic image pairs is an important...
This paper presents a dynamic backlight dimming algorithm that uses multiple histograms. The proposed method greatly reduces gray-level error for some pixels whose gray levels are beyond the compensation limit, thereby enhancing the image quality.
In this paper, we propose a parallel processing method to generate free viewpoint image in realtime. It is impossible to arrange the cameras in a high density realistically though it is necessary to capture images of the scene from innumerable cameras to express the free viewpoint image. Therefore, it is necessary to interpolate the image of arbitrary viewpoint from limited captured images. However,...
Nonuniformity correction plays an important role in improving image quality of the infrared focal plane array. A self-adaptive nonuniformity correction algorithm for infrared images combined with two-point correction along the rim is proposed in this paper. With the help of perimeter blackbody in low and high temperature, two-point correction is executed initially to perimeter detectors. Then based...
Visual attention models are typically designed based on human gaze patterns recorded through eye tracking. In this paper, two similar eye tracking experiments from independent laboratories are presented, in which humans observed natural images under task-free condition. The resulting saliency maps are analysed with respect to two criteria; the consistency between the experiments and the impact of...
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