Music – Instruments – Electrical musical tone generation
Patent
1999-03-09
2000-07-04
Witkowski, Stanley J.
Music
Instruments
Electrical musical tone generation
84636, 84668, 84477R, 84DIG12, G10H 140
Patent
active
060841699
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to an automatic music composing method for automatically composing background music for an input image. More specifically, the invention relates to an automatic music composing method and system for analyzing an input image and automatically composing music which matches the atmosphere of the input image and continues during the period while the image is displayed.
2. Description of the Related Art
A conventional method of generating background music for an image is, for example, "Automatic Background Music Generation based on Actors' Mood and Motion" described in The Journal of Visualization and Computer Animation, Vol. 5, pp. 247-264 (1994). According to this conventional technology, a user enters for each scene of a moving image of computer animation a mood type representative of the atmosphere of each scene and a reproduction time of each scene, and in accordance with the entered atmosphere and time, background music is generated and added to the moving image. In many cases, producers add background music to animation, movies, and the like by themselves. In this case, the atmosphere suitable for each scene and the time of each scene are usually predetermined during the production process. It is therefore easy to know the conditions to be supplied to a background music generating system.
However, in the case of a general moving image such as a video image photographed by a common user, which scene is photographed in how many seconds is not predetermined. In adding background music to video images (moving images) photographed by a common user by using the above-described conventional technology, the user must find the division positions of scenes after the video images are photographed and determine the background music generating conditions as to the reproduction time and atmosphere of each scene to supply the conditions to the system. It takes therefore a long time and requires a considerable amount of work.
DISCLOSURE OF THE INVENTION
An object of the invention is to solve the above-mentioned problem and provide an automatic music composing system capable of automatically composing BGM suitable for the atmosphere and reproduction time of a externally supplied moving image, a video editing system including such an automatic music composing system, and a multimedia production generation support system.
The above-mentioned object can be achieved by an automatic music composing method in which a given moving changing image is divided into scenes, a feature of each scene is extracted, the feature is converted into a parameter, and background music is automatically composed by using the parameter and scene reproduction time.
In a background music assigning method according to this invention, a given moving or changing image is divided into scenes, a feature of each scene is extracted, the feature is converted into a parameter to be used for automatic musical performance, background music is automatically composed by using the parameter and scene reproduction time, and background matching an atmosphere and reproduction time of the moving or changing image is outputted, together with the moving or changing image.
BRIEF DESCRIPTION OF DRAWINGS
FIG. 1 is a flow chart illustrating one example of a process flow of a method of adding background music to a moving image according to the invention;
FIG. 2 is a block diagram showing the structure of a system of adding background music to an image according to an embodiment of the invention;
FIG. 3 is an illustrative diagram showing a specific example of moving image data;
FIG. 4 is an illustrative diagram showing specific examples of image data and still image data contained in moving image data;
FIG. 5 is an illustrative diagram showing a specific example of scene information train data;
FIG. 6 is a drawing showing an example of an image feature extracting process flow;
FIG. 7 is an illustrative diagram showing a specific example of sensitivity data stored in a sensitivity data
REFERENCES:
patent: 5159140 (1992-10-01), Kimpara et al.
Akio Nagasaka et al., "Automatic Video Indexing and Full-Video Search for Object Appearances," Papers vol. 33, No. 4, Information Processing Society of Japan, Apr. 1992.
Jun-Ichi Nakamura, et al. "Automatic Background Music Generation based on Actors' Mood and Motions", The Journal of Visualization and Computer Animation, vol. 3, pp. 246-264, 1994.
Hasegawa Takashi
Kitahara Yoshinori
Hitachi , Ltd.
Witkowski Stanley J.
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