Blur Determination in the Compressed Domain Using DTC Information

Video Abstraction in H.264/AVC Compressed Domain

Video abstraction allows searching, browsing and evaluating videos only by accessing the useful contents. Most of the studies are using pixel domain, which requires the decoding process and needs more time and process consuming than compressed domain video abstraction. In this paper, we present a new video abstraction method in H.264/AVC compressed domain, AVAIF. The method is based on the norm...

Semantic-Based Image Retrial in the VQ Compressed Domain using Image Annotation Statistical Models

Improving Super-resolution Techniques via Employing Blurriness Information of the Image

Super-resolution (SR) is a technique that produces a high resolution (HR) image via employing a number of low resolution (LR) images from the same scene. One of the degradations that attenuates performance of the SR is the blurriness of the input LR images. In many previous works in the SR, the blurriness of the LR images is assumed to be due to the integral effect of the image sensor of the im...

Blur Detection For Video Streams In The Compressed Domain

In ubiquitous multimedia area, the number of digital videos increases dramatically with various qualities in video frames. Artifacts such as blur may commonly exist in video treams which will disturb compression and retrieval applications. This paper proposes an algorithm that detects video frames with global blur and partial blur. The proposed algorithm extracts the features which represent bl...

On Line Determination of Optimal Hysteresis Band Amplitudes in Direct Torque Control of Induction Motor Drives

In conventional direct torque control (DTC) of induction machines, undesirable flux and torque ripples are produced. These occur since non of the selected inverter's voltage vectors are able to generate the exact voltage required to produce the desired changes in the electromagnetic torque and stator flux linkage in most of the switching instances. In addition, when direct torque control is imp...