A method for detecting and tracking human faces in color videos is presented. The method first uses a chroma chart with information about skin colors of various races to determine regions of skin color in the first frame of a video. A new chroma chart is computed for each region, which more precisely represents the color contents of that region. Chroma charts for different regions that are simi...

Abstract. We report a calculation reduction method for color computer-generated holograms (CGHs) using color space conversion. Color CGHs are generally calculated on RGB space. In this paper, we calculate color CGHs in other color spaces: for example, YCbCr color space. In YCbCr color space, a RGB image is converted to the luminance component (Y), blue-difference chroma (Cb) and red-difference ...

Extensions to the C++ implementation of the QCD Data Parallel Interface are provided enabling acceleration of expression evaluation on NVIDIA GPUs. Single expressions are off-loaded to the device memory and execution domain leveraging the Portable Expression Template Engine and using Just-in-Time compilation techniques. Memory management is automated by a software implementation of a cache cont...

In this paper some specific issues related to Music Information Retrieval (MIR) are presented. First part is dedicated to introductive notions from this field in the field, and second part is dedicated to giving details about the system we built for MusiCLEF 2011. An important aspect related to our work is related to searching metrics able to allow us to identify an audio recording in a databas...

The computer-based harmonic analysis of music recordings with the goal to automatically extract chord labels directly from the given audio data constitutes a major task in music information retrieval. In most automated chord recognition procedures, the given music recording is first converted into a sequence of chroma-based audio features and then pattern matching techniques are applied to map ...

The H.264 video coding standard is widely used due to the high compression rate and quality. The motion compensation is the most time-consuming and complex unit in the H.264 decoder. The performance of the motion compensation is determined by the calculation of pixel interpolation. The quarter-pixel interpolation is achieved using 6-tap horizontal or vertical FIR filters for luminance data and ...

In collections of recordings of classical music, it is normal to find multiple performances, usually by different artists, of the same pieces of music. While there may be differences in many dimensions of musical similarity, such as timbre, pitch or structural detail, the underlying musical content is essentially and recognizably the same. The degree of divergence is generally less than that fo...

In this paper, we propose Thermoscore, a musical score form that dynamically alters the temperature of the instrument/play er interface. We developed the first version of the Thermoscore display by lining Peltier devices on piano keys. The system is controlled by MIDI notes-on messages from an MIDI sequencer, so that a composer can design songs that are sequences of temperature for each piano k...

The relationship between colour parameters and anthocyanins of four sweet cherry cultivars, Burlat, Saco, Summit and Van was studied. The colour (L*, a*, b*, chroma and hue angle parameters) and anthocyanins were analysed during two different years at two different ripening stages (partially ripe, and ripe, respectively). The cherries were analysed at harvest and after storage at 1.5 ± 0.5 C an...

The present experiments assessed the contribution of tone height, melodic contour, and tone chroma to melody recognition. Rather than using highly familiar folk songs as in earlier studies, subjects were taught new melodies. Novel melodies were used to (a) more precisely control potential cues (e.g., rhythm) that are not of present interest, (b) eliminate unison intervals that cannot be transfo...