[diary]about virtual reality
virtual reality(vr), it's my elective this term.yesterday and today, i'm doing with vrml for a no-stopped time to finish the final terminal homework.to be honest, i didn't learn anything about vr though i've chosen it.so, it's a little difficult for me to finish all the code in two days(i have no choice,today is the last day to submit this work).as a fact, i've got it now,and i'm pretty tired, but i'm comfortable with my finished final terminal homework.
the term "virtual reality" was initially coined by Jaron Lanier, which i haven't ever known before. who is he? he is the founder of VRL. and then the question is following, what is VRL? I don't know,either.but, i don't care about it.let's continue the subject.
Today, 'Virtual Reality' is used in a variety of ways and often in a confusing and misleading manner. Originally, the term referred to 'Immersive Virtual Reality.' In immersive VR, the user becomes fully immersed in an artificial, three-dimensional world that is completely generated by a computer.
Head-Mounted Display (HMD)
The head-mounted display (HMD) was the first device providing its wearer with an immersive experience. Evans and Sutherland demonstrated a head-mounted stereo display already in 1965. It took more then 20 years before VPL Research introduced a commercially available HMD, the famous "EyePhone" system (1989).
A typical HMD houses two miniature display screens and an optical system that channels the images from the screens to the eyes, thereby, presenting a stereo view of a virtual world. A motion tracker continuously measures the position and orientation of the user's head and allows the image generating computer to adjust the scene representation to the current view. As a result, the viewer can look around and walk through the surrounding virtual environment. To overcome the often uncomfortable intrusiveness of a head-mounted display, alternative concepts (e.g., BOOM and CAVE) for immersive viewing of virtual environments were developed.
i want to stop my reading at this point for i'm pretty pretty tired now, i need a nap.may i'll continue this subject another.
the term "virtual reality" was initially coined by Jaron Lanier, which i haven't ever known before. who is he? he is the founder of VRL. and then the question is following, what is VRL? I don't know,either.but, i don't care about it.let's continue the subject.
Today, 'Virtual Reality' is used in a variety of ways and often in a confusing and misleading manner. Originally, the term referred to 'Immersive Virtual Reality.' In immersive VR, the user becomes fully immersed in an artificial, three-dimensional world that is completely generated by a computer.
Head-Mounted Display (HMD)
The head-mounted display (HMD) was the first device providing its wearer with an immersive experience. Evans and Sutherland demonstrated a head-mounted stereo display already in 1965. It took more then 20 years before VPL Research introduced a commercially available HMD, the famous "EyePhone" system (1989).
A typical HMD houses two miniature display screens and an optical system that channels the images from the screens to the eyes, thereby, presenting a stereo view of a virtual world. A motion tracker continuously measures the position and orientation of the user's head and allows the image generating computer to adjust the scene representation to the current view. As a result, the viewer can look around and walk through the surrounding virtual environment. To overcome the often uncomfortable intrusiveness of a head-mounted display, alternative concepts (e.g., BOOM and CAVE) for immersive viewing of virtual environments were developed.
i want to stop my reading at this point for i'm pretty pretty tired now, i need a nap.may i'll continue this subject another.
posted by sany at 10:05 PM
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