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Real time video streaming suffers from lost, delayed, and corrupted frames due to the transmission over error prone channels. As an effect of that, the user may notice a frozen picture in their screen. In this work, we propose a technique to eliminate the frozen video and provide a satisfactory quality to the mobile viewer by splitting the video frames into sub-frames. The multiple descriptions coding...
A nonlinear filter bank named as an ∈-filter bank is implemented for real-time processing of video in order to make the skin in human faces look beautified. General-purpose computing on graphics processing units (GPGPU) is utilized for this real-time implementation. GPGPU has quite high computational power, and the facial beautification system using the ∈-filter bank is efficiently implemented in...
Augmented reality aims to insert virtual objects in real scenes. In order to obtain a coherent and realistic integration, these objects have to be relighted according to their positions and real light conditions. They also have to deal with occlusion by nearest parts of the real scene. To achieve this, we have to extract photometry and geometry from the real scene. In this paper, we adapt high dynamic...
4K that became a digital cinema standard in 2005 is now recognized as the next high quality image technology of HD in the market. This paper describes what 4K is, the status of 4K, and 4K applications other than digital cinema. We introduces three 4K applications, 4K alternative content with live transmission, 4K usage in dome theaters, and 4K video conference with our proof-of-concept experiments...
Real-time video enhancement is generally achieved using costly specialized hardware that have specific functions and outputs. Commercial off-the-shelf hardware, such as desktop computers with Graphics Processing Units (GPUs), are also commonly used as cost effective solutions for real-time video processing. In the past, the limitations in computer hardware meant that real-time video enhancement was...
Particle Swarm Optimization (PSO) algorithm has been widely recognized as an efficient algorithm with applicability is many areas. Recently, we proposed the Guided Particle Swarm Optimization (GPSO) algorithm, which is a modification to PSO designed for facial emotion detection. GPSO involves keeping track of relevant points, called Action Units (AUs), which are specified on the face of a subject...
Intelligent watermarking (IW) allows adapting embedding parameter for each image and set of attacks using evolutionary computing. However, IW is not practical in real-world applications because of the computational cost of (evolutionary computing) algorithms that must be applied to optimize the parameters for each document image. It is however possible to formulate IW as a dynamic optimization problem...
Objective Converting DICOM Multi-frame image to multimedia format is implemented. Methods By parsing DICOM structure, using DCMTK as supportive toolkit and based on object-oriented programming, pixel data in DICOM multi-frame image are written into multimedia file. Results A lot of images are tested from different modalities such as MR, NM, XA, etc. And all of them can be converted to multimedia format...
In order to transmit live video or video streaming at low bit-rates, the encoder usually needs to reduce the frame rate to cope with the available bandwidth. In this paper, a new dynamic frame-skipping scheme for live video encoding based on motion detection in the adaptive length sliding window is proposed. The length of a sliding window can be adjusted according to bandwidth variation in order to...
Packet losses or errors of high compressed video stream during transmission over error-prone channel may cause serious decline in video quality. Error concealment (EC) at decoder side is an effective technology to reduce this video degradation. This paper proposes a Dynamic Temporal Error Concealment (DTEC) algorithm for H.264, which chooses different error concealment approach according to the variance...
With the gradual maturity of image processing and embedded development technology, the conventional video detection system is improved towards the intelligence and the miniaturization. Embedded development board and embedded Linux OS offer enough support for this trend. This paper firstly introduces the construction of the hardware and software's platform, and then describes the system framework made...
This paper presents a method to automatically detect faults in transmission lines by using thermographie images. It involves the acquisition of infrared images over a network and its processing. Since the method is intented to be used embedded in a robot, low demands on processing power are required, in order to enable inspection on large extensions of transmission lines. The automatic inspection...
Based on the group of SONY Company ICX229AK PAL image sensor chipset, PAL integrative camera with VGA interface is designed in this paper. Using the DSP + FPGA + ASIC architecture, it completes the acquisition of the video signal and display, and achieves key technologies of auto-focusing and auto iris in the FPGA. Some new type practical functions such as four images storage, mouse driver, real-time...
This paper presents the solution of image mosaics in video conference. The video conference has become more and more useful because of the economical and ecological cost of transport. In some large video conference, it will need two or more cameras to capture the wide scene. It is not convenient for the attendees to view two or more displays at the meeting. The proposed image mosaics solution is to...
The purpose of this paper is to describe the difference between edge detection based on software and the full use of hardware resources within the FPGA. According to the video signal theory and edge detection algorithm, the author designs the IP core of video image edge detection and builds the video image edge detection system on the EDK. The hardware circuit of the algorithm is achieved on ISE9...
Paper describe an NP-video phenomena model system. It provides a simple non-photorealistic scene model in which users can not only obtain an abstraction, infinite video but also obtain enjoyable and real-time artistic experience. Firstly, we design a new algorithm for fast converting a photo or image to a synthesized painting of abstraction. Secondly, we propose a new modeling video texture based...
In this paper, we proposed a novel video enhancement for moving-objects in the dusk environment based on mixed-mode processing which involves de-noising, moving object detection, and image enhancement. The basic strategy is to first calculate each pixel's motion vector and then check the magnitude of this motion vector to determine that the pixel belongs to foreground (i.e., moving object) or background...
A scheme of information hiding for H.264 based on the prediction difference of intra_4 × 4 is proposed in this paper. According to this difference, the proposed algorithm first divided the intra_4 × 4 prediction modes (I4-modes) into two groups to form the rule of mapping between these modes and the bits to be hidden, and then modified the I4-modes by the rule of mapping to implement the hiding of...
Due to channel noise and congestion, video data packets can be lost during transmission in error-prone networks, which severely affects the quality of received video sequences. The conventional inter-frame error concealment (EC) methods estimate a motion vector (MV) for a corrupted block or reconstruct the corrupted pixel values using spatial and temporal weighted interpolation, which may result in...
Human visual system function is non-uniform to visual perception. Normally, people tend to focus on one or more specific moving objects while watching video. In addition, video transmission is flawed due to heterogeneous networks and limited bandwidth. Therefore, how to transmit the content of interests more efficiently becomes a growing concerning topic. This paper proposes a method of multi-region...
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