Performance apparatus, a method of controlling the performance apparatus and a program recording medium

A non-transitory computer readable recording medium having stored thereon a program for controlling a computer of a performance apparatus, wherein the performance apparatus includes a performance member which is operable by a player, a storing unit which stores layout information including positions of plural areas set on a virtual plane, and an image pickup unit which continuously takes pickup images including the performance member and a region of the virtual plane in which the performance member is operated, and wherein the computer program, when read and executed by the computer, controls the computer to implement functions comprising:

• detecting a position of the performance member on the virtual plane in a first pickup image and a position of the performance member on the virtual plane in a second pickup image among the pickup images taken by the image pickup unit, wherein the second pickup image was taken prior to the first pickup image;
• comparing the two detected positions of the performance member to judge whether the difference between the two detected positions of the performance member is more than a predetermined value, and setting the position of the performance member on the the virtual plane in the first pickup image as a present position of the performance member when it is determined that the difference between the two detected positions of the performance member is more than the predetermined value, and setting the position of the performance member on the virtual plane in the second pickup image as the present position of the performance member when it is determined that the difference between the two detected positions of the performance member is less than the predetermined value;
• and
• instructing generation of a musical tone corresponding to an area including the determined present position of the performance member when the difference between the two detected positions of the performance member is more than the predetermined value and the determined present position of the performance member is included in one of the plural areas whose positions are included in the layout information.

A method of controlling a performance apparatus, wherein the performance apparatus includes a performance member which is operable by a player, a storing unit which stores layout information including positions of plural areas set on a virtual plane, and an image pickup unit which continuously takes pickup images including the performance member and a region of the virtual plane in which the performance member is operated, the method comprising:

• a detecting a position of the performance member on the virtual plane in a first pickup image and a position of the performance member on the virtual plane in a second pickup image among the pickup images taken by the image pickup unit, wherein the second pickup image was taken prior to the first pickup image;
• comparing the two detected positions of the performance member to judge whether the difference between the two detected positions of the performance member is more than a predetermined value, and setting the position of the performance member on the virtual plane in the first pickup image as a present position of the performance member when it is determined that the difference between the two detected positions of the performance member is more than the predetermined value, and setting the position of the performance member on the the virtual plane in the second pickup image as the present position of the performance member when it is determined that the difference between the two detected positions of the performance member is less than the predetermined value;
• and
• instructing generation of a musical tone corresponding to an area including the determined present position of the performance member when the difference between the two detected positions of the performance member is more than the predetermined value and the determined present position of the performance member is included in one of the plural areas whose positions are included in the layout information.