1. A user-interface for being operated by a finger, hand, or foot of a user, said user-interface comprising:
a fluid inlet;
a fluid outlet;
a drain;
a waterswitch that receives incoming water from a fluid inlet that selectively directs said incoming water to an outlet or to a drain; and
a sensor,
said sensor for sensing said user’s finger, hand, or foot on, at, or near said outlet
2. The user-interface according to claim 1, wherein said user’s finger, hand, or foot blocking said outlet directs said incoming water to said to said drain.
3. The user-interface according to claim 1, wherein said sensor is arranged for being hit by water when water flows to said drain in said waterswitch, said sensor generating a sound output.
4. The user-interface according to claim 3, wherein said water is amplified and controlled by at least one other device.
5. The user-interface according to claim 3, further including a frequency-shifter, wherein said sound output is frequency-shifted to at least one musical note by said frequency shifter.
6. A musical instrument based on a plurality of the user-interfaces according to claim 5, wherein each of said frequency-shifters frequency-shifts an output of each of said sensors to a different note on a musical scale.
7. The musical instrument according to claim 6, wherein said outlets are ground nozzles, and said musical instrument is for being played by said user’s feet.
8. The user-interface according to claim 1, wherein said fluid outlet is a ground nozzle driven by said waterswitch, said ground nozzle for being stepped on by said user.
9. The user-interface according to claim 8, wherein said waterswitch produces subsonic sound in said sensor, when said water is directed to said drain.
10. The user-interface according to claim 9, wherein said subsonic sound includes a DC offset in said sensor.
11. The user-interface according to claim 3, wherein said sensor is a geophone struck by said water and said geophone generates said sound output.
12. A user-interface, comprising:
a game; and
a plurality of water jets for being blocked or unblocked by a user blocking said water jets, said game responsive to said blocking of said water jets.
13. The user-interface according to claim 12, wherein said game is a video game, and said user interface has an array of pixels, each of said water jets representing a pixel in said video game.
14. The user-interface according to claim 13, wherein said pixels are shown at different times.
15. The user-interface according to claim 14, wherein said pixels are shown at said different successive times.
16. The user-interface according to claim 12, wherein at least one of said water jets is responsive to an output of at least one of said sensors.
17. The user-interface according to claim 16, wherein said sensors are connected to a processor that produces a plurality of musical sounds.
18. The user-interface according to claim 17, wherein said processor produces a different musical sound in response to said blockage of each said water jets.
19. The user-interface according to claim 16, wherein an output of one water jet is responsive to a sensor of at least one other water jet.
20. The user-interface according to claim 12, wherein blocking a water jet starts a domino effect of a plurality of other water jets.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A tomographic image obtainment apparatus, wherein a tomographic image is reconstructed from a plurality of radiographic images obtained by irradiating a subject with radiation from various directions, the apparatus comprising:
a radiation image detector for obtaining radiographic images of the subject;
a radiation irradiation unit placed so as to face the radiation image detector, the radiation irradiation unit moving to a plurality of positions and irradiating, at the plurality of positions, the subject placed on the radiation image detector with radiation from various directions;
an overlap-degree obtainment means for obtaining the degree of overlap of anatomical structures of the subject; and
an exposure condition setting means for setting, based on the degree of overlap obtained by the overlap-degree obtainment means, a condition of exposure by the radiation irradiation unit at the plurality of positions to obtain the plurality of radiographic images.
2. A tomographic image obtainment apparatus, as defined in claim 1, wherein the overlap-degree obtainment means obtains the degree of overlap of the anatomical structures in the direction of the normal of a detection surface of the radiation image detector.
3. A tomographic image obtainment apparatus, as defined in claim 1, wherein the exposure condition setting means sets the condition of exposure so that the range of movement of the radiation irradiation unit is increased if the degree of overlap is large.
4. A tomographic image obtainment apparatus, as defined in claim 1, wherein the exposure condition setting means sets the condition of exposure so that an interval between the plurality of positions to which the radiation irradiation unit moves is reduced if the degree of overlap is large.
5. A tomographic image obtainment apparatus, as defined in claim 1, wherein the overlap-degree obtainment means obtains the degree of overlap based on the pixel values of a radiographic image obtained by radiographing the subject on the radiation image detector.
6. A tomographic image obtainment apparatus, as defined in claim 1, further comprising:
an ultrasound image obtainment unit for obtaining an ultrasound image of the subject on the radiation image detector, wherein the overlap-degree obtainment means obtains the degree of overlap based on the pixel values of the ultrasound image of the subject on the radiation image detector.
7. A tomographic image obtainment apparatus, as defined in claim 1, wherein the overlap-degree obtainment means obtains the degree of overlap based on the thickness of the subject.
8. A tomographic image obtainment apparatus, as defined in claim 1, wherein the overlap-degree obtainment means obtains the degree of overlap based on the weight of the subject.
9. A tomographic image obtainment method, wherein a tomographic image is reconstructed from a plurality of radiographic images obtained by irradiating a subject with radiation from various directions, the method comprising the steps of:
obtaining the degree of overlap of anatomical structures of the subject in a direction of irradiation; and
setting a condition of exposure of the subject based on the obtained degree of overlap.