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The following topics are dealt with : user interface; human-computer interaction; video quality assessment; mobile communication; audio quality assessment; security; video coding; RF and wireless networks; object detection; terrestrial television; imaging and display technology; data storage; HDTV video transport; Internet protocol television (IPTV); and home networking.
With the rapid growth of media-processing technologies and the advancement of semiconductor process, more and more multimedia applications are integrated into consumer electronics. However, in such highly complex system, the design time for the circuit designers does not reduce much as the process advances. We propose a novel hybrid pipeline design methodology for multi-core streaming system from...
The electrophoretic display (EPD) has become the main solution to electronic paper, but it is temperature sensitive with only a few number of gray levels. In this paper, we present an integrated image tool to automatically estimate the reflectance function curves under different temperatures, perform adaptive image halftoning to improve visual quality, and calibrate the image to compensate the nonlinear...
A mobile digital-terrestrial-television SoC with two multi-standard video codec is integrated on a 5.3×5.4 mm2 die in 45 nm CMOS. The dual video codec with dynamic frequency selection and advanced tile-based address translation consumes 80 mW in real-time playback of full-HD MPEG-2 and SD H.264 streams from 64 bits width low-power DDR-SDRAM at 1.1V.
This paper describes a method to stabilize video for vehicular applications based on Harris features and adaptive resolution. Lucas-Kanade method is applied to match feature points of consecutive frames and construct the feature motion flow. A damping filer is utilized to model the unwanted motion and global motion is separated by extracting oscillation. 92% correct rate with 0.54 second per frame...
This paper presented the personal authentication system using little resources for home use. The following three goals were achieved at the same time by this system: (1) identification of each individual, (2) unique existence of each individual in the specified time and space, and (3) no contradiction in the existence of each individual in view of the space and the time before and after an event....
This paper presents a noise-robust super-resolution algorithm. In learning phase, a dictionary classified according to noise level is constructed, and then a high-resolution image is synthesized using the dictionary in the inference phase. Experimental results show that the proposed algorithm outperforms the existing algorithms even for noisy images.
This paper proposes a method of arranging icons which are different in size and shape on an audio-visual remote control screen efficiently and to create graphical user interfaces automatically using a genetic algorithm. The proposed system displays function icons only of the selected AV equipment that the user wants to operate so as to find their target icon easily. This paper deals with AV systems...
This paper introduces ideas for a different representation of video material. Instead of traditional, pixel based video storage and compression, the investigation is directed towards an object based video representation which introduces less quality loss during the transmission path and may remarkably lower the data rate. Therefore, we compare both representations in terms of data rate and quality.
USB devices are widely used in consumer electronics. Writing device drivers has always been a tedious and error-prone job. This paper presents assisting tools for developing USB drivers under Linux OS. The tool kit includes (1) a generic-skeleton generator that can automatically generate generic USB driver code skeleton according to user-specified configuration, (2) a flattened-HID-driver generator...
This paper presents a novel method for providing the Electronic Program Guide (EPG) for the Radio Frequency (RF) fed cable TV users by recognizing the channel logo and then extracting the EPG from their website. The prototype is developed in X86 platform and then ported on a real time DSP platform and performs with nearly 100% accuracy.
In this paper, we propose a fast motion estimation algorithm to reduce computational load of the FS (full search) algorithm. We reduce only unnecessary computations which doesn't affect predicted images from the motion vector. To do that, we use normalized dithering matching scan to get uniform distribution of partial distortion by which we can reduce only unnecessary computation significantly. Additionally,...
This paper presents the methodologies taken to integrate open-source LIVE555 based data streamer with a baseline H.264 encoder running on the Texas Instruments's DaVinci based embedded platform. The system implemented is able to stream live H.264 encoded video over the network, and be displayed on remote stations using the VLC media player. The system developed provides an embedded platform to implement...
In this paper, a novel low-power Viterbi decoder with soft decision is proposed. For the branch metric of the Viterbi decoder, our design employs a soft-decision method to improve its correction capability. In order to find the survivor path efficiently, we modify the classical Viterbi decoding algorithm into a new one. This new algorithm is similar to the register-exchange method with lower latency,...
This paper addresses the problem of single-channel speech separation to extract and enhance the desired speech signals from mixed speech signals. We propose a new speech separation algorithm by utilizing both magnitude and phase information, which can be applied to multimedia mobile communication and navigation systems. Conventionally, phase information has been neglected in speech signal processing...
We propose a simple and robust carrier frequency recovery (CFR) scheme for DVB-S2 receivers. The proposed coarse CFR scheme employs a modified Mengali and Morelli (M&M) algorithm and recovers a coarse carrier frequency offset (CFO) accurately. After coarse CFR, a fine CFR scheme that employs a simple pilot block correlation algorithm recovers a residual CFO. The proposed scheme shows a bit error...
This paper describes the new architecture of 10:1 Serializer and 1:10 Deserializer (SerDes) for CMOS image sensor module in mobile display application. We propose the multiplexing technique of Double Data Rate (DDR) for effective serializing and deserializing operations. With this technique, we can reduce the clock periods by half. This SerDes architecture enables the transmission of high resolution...
Due to the explosive growth in ubiquitous multimedia access, one needs to adapt the considerable number of pre-encoded video content to a wide variety of user constraints such as different resolution, bitrate, frame rate, processing power and platform. Current adaptation frameworks do not take the encoder into account. In other words the encoder optimizes its outcome for the base layer only, regardless...
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