I developed the music score conversion system from the equal temperament to the pure temperament using the S-YXG50 MIDI sound source by programmed control of pitch bend function. Based upon this system, I composed the music suite "KITAKAMI" , and by integrating the suite with the DirectX CG, I composed the visual music system. I used the SDL(Score description Language) SPICE to describe the music score. Within pure temperament conversion, I also could find the neutral key which sounds just the middle of the merry major and the dark minor.
In late years, it has been expected that a method for estimating psychological conditions based on biosignals be applied to various fields like welfare, education and industry from the viewpoint of man-machine interface. For avoiding physical and mental constraining feelings, it would be preferable to detect biosignals without putting sensors on subjects. Therefore, we use an infrared ray camera with contactless method as our measurement, and evaluate unpleasant mood by facial images. We did this experiment under the conditions of room temperature of 23 &pluemn;1.0 °C, illumination of 200lx, and perfect calm environment. We set an infrared ray camera TVS-600 at the horizontal distance of 1.0m from subject's face. For extracting the facial image, the image size of the camera is 320 X 236 pixel, temperature resolution is &pluemn;0.1 °C, and skin emissivity is 0.98. Beginning of the experiment, subjects sit just 3 minutes with their eyes open, and kept quiet in order to accommodate with experimental condition. Then, we showed them some kinds of unpleasant pictures, and took thermal facial images. Analysis of individual thermal images revealed that 3 of the 5 subjects showed thermal change. Considering future applications to patients who cannot show emotion by facial expression or utterance because of disease such as Amyotrophic Lateral Sclerosis, we demonstrate the effectiveness of this study.
This paper presents a 3-D measurement system based on binocular stereo matching method using random pattern light projection. In area-based stereo matching, it is very difficult for computer to determine corresponding points correctly. And it is serious problem to select an appropriate window size. In order to solve these problems, we employ the 2-D random pattern light projection. To acquire clear images of the target object, detailed random pattern and appropriate window size used in stereo matching are needed. There is a limit of frequency range of the projection pattern because the imaging system has some low-pass characteristics. Therefore we analyze the frequency response of the imaging system and used the results to make optimum random pattern. The appropriate window size is determined by the autocorrelation of the random pattern. We achieved matching accuracy of 97% using the proposed random pattern.
We have developed an ultrahigh-sensitivity HARP handheld camera, which has a sensitivity that is about 100 times as great as that of a CCD camera. The sensitivity of TV cameras is determined by the performance of the imaging device. We developed the world's first imaging device that achieves high sensitivity and high picture quality by using the continuous and stable avalanche multiplication phenomenon in an amorphous selenium photoconductive target. This imaging device, called the HARP pickup tube, has an avalanche multiplication factor of more than 600. The HARP handheld camera equipped with the new tubes has a maximum sensitivity of 11 lx at F8. This camera is a powerful tool for reporting breaking news at night and other low-light conditions, the production of scientific programs, and numerous other applications.
We performed in vivo preclinical studies using the rabbit model of cancer for testing of cancer treatment using a microangiographic technique. Sequential changes in the tumor angiogenic vessels were determined exactly. This system is demonstrably useful for evaluation of the effects of new cancer treatments in preclinical testing. A microtomographic approach using rabbit specimens fixed after barium sulfate injection into blood vessels can also precisely evaluate the effect of cancer treatment and can quantify characteristic features of tumor angiogenic vessels well. Both microangiographic and microtomographic images are obtainable from the same auricle. Therefore, preclinical studies with greater accuracy are expected using the dual perspectives of microangiographic real-time imaging and microtomographic 3-D imaging.
In this report, we report that a pyroelectric infrared (IR) sensor using epitaxial Pb(Zr,Ti)O3 (PZT) thin films on γ-Al2O3/Si substrates has successfully fabricated for the first time. The fabricated sensor operated under chopping frequency of 100 Hz. The values of output signals were 1.6 mVp-p, 0.8 mVp-p and 0.5 mVp-p with the chopping frequencies of 20 Hz, 50 Hz and 100 Hz, respectively. This sensor will have potentials for Si integrated sensing systems
A multi-functional CMOS image sensor was designed and fabricated. We designed a sensing circuitry for on-chip electrochemical measurement. We implemented an 8x8 array of the electrochemical measurement pixels onto a 128x128 optical image sensor with a pixel size of 7.5um. We characterized basic properties of the electrochemical measurement pixel and demonstrated its function with an off-chip cyclic-voltammetry measurement.