This paper presents an automatic system for analyzing and annotating video sequences of technical talks. Our method uses a robust motion estimation technique to detect key frames and segment the video sequence into subsequences containing a single overhead slide. The subsequences are stabilized to remove motion that occurs when the speaker adjusts their slides. Any changes remaining between fra...

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Video watermarking is well known as the process of embedding copy right information in video bit streams. It had been proposed in recent years to solve the problem of illegal manipulation and distribution of digital video . In this study, an effective, robust DCT transform using MATLAB. In the proposed method, first the video frames are extracted from the host video. Then, each frame gets water...

Facile "writing" of DNA fragments that encode entire gene sequences potentially has widespread applications in biological analysis and engineering. Rapid writing of open reading frames (ORFs) for expressed proteins could transform protein engineering and production for protein design, synthetic biology, and structural analysis. Here we present a process, protein fabrication automation (PFA), wh...

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This paper and commentary is about cultural forms, how agency is frozen into and circulates through them over historical time, and how these processes are relevant for design-oriented studies of classroom learning and teaching. Becker, writing about the costs of being an innovator in the classical music business, frames a lone innovator (Harry Partch, a creator of micro-tonal compositions, inst...

Emerging social writing platforms offer possibilities for language learners to collaborate around joint assignments. One such environment is the wiki, generally hosting two prominent modes of usage, web pages and discussion forums. This study investigates software engineering students’ use of a wiki as an integrated tool within the frames of a language course. The purpose of the case study was ...

Toward realization of “writing-life-log,” a camera-based handwriting pattern acquisition system is proposed. The camera is attached around the tip of a popular pen and captures frame images around the pen tip continuously. Our problem is the reconstruction of the entire handwriting pattern by video-mosaicing of those frame images with perspective registration of consecutive frames. A key idea i...