Provided are an ink data generation apparatus, an ink data generation method, and an ink data generation program that are capable of improving ease of handling ink data when or after metadata is generated. An ink data generation apparatus performs a determination as to an inclusion relation between a first set and a second set by comparing stroke elements of first set data and stroke elements of second set data using the first set data and the second set data. The ink data generation apparatus generates first metadata for the first set described in a form that varies in accordance with a result of the determination.

In accordance with various embodiments, a method is performed at an electronic device including a display device and one or more input devices. The method includes displaying, on the display device, a first graphing area including a first section presenting a plot of a first set of data points for a first variable and a second section. The method includes detecting, via the one or more input devices, a user input indicative of a path within a second section. The method includes determining, based on the user input indicative of a path within the second section, a second set of data points for the first variable. The method includes determining, based at least on the second set of data points for the first variable, a set of data points for a second variable. The method includes displaying, on the display device, a second graphing area presenting a plot of the set of data points for the second variable.

In accordance with various embodiments, a method is performed at an electronic device including a display device and one or more input devices. The method includes displaying, on the display device, a first graphing area including a first section presenting a plot of a first set of data points for a first variable and a second section. The method includes detecting, via the one or more input devices, a user input indicative of a path within a second section. The method includes determining, based on the user input indicative of a path within the second section, a second set of data points for the first variable. The method includes determining, based at least on the second set of data points for the first variable, a set of data points for a second variable. The method includes displaying, on the display device, a second graphing area presenting a plot of the set of data points for the second variable.

A display device includes: a display unit displaying an image on a display surface; a detection unit detecting a position on the display surface pointed by a pointing unit; and a control unit causing the display unit to display an image based on the position detected by the detection unit. The control unit causes the display unit to display a first image and a second image having a different setting of a first attribute and a second attribute from the first image. The control unit decides a setting of the first attribute and the second attribute used for the image based on the position detected by the detection unit, according to an operation on the first image or the second image.

A display device includes: a display unit displaying an image on a display surface; a detection unit detecting a position on the display surface pointed by a pointing unit; and a control unit causing the display unit to display an image based on the position detected by the detection unit. The control unit causes the display unit to display a first image and a second image having a different setting of a first attribute and a second attribute from the first image. The control unit decides a setting of the first attribute and the second attribute used for the image based on the position detected by the detection unit, according to an operation on the first image or the second image.

In implementations of path-constrained drawing with visual properties based on a drawing tool, a digital artwork editing system includes a user interface in which a constraint path can be designated in a digital artwork. A stroke input can be sampled as it is drawn with a drawing tool and for each processing interval of the stroke input, a start point of the stroke input and a tangent line to the constraint path is determined. An end point of the stroke input is projected onto a parallel line that is through the start point and parallel to the tangent line, and a stroke is rendered along this line. Hence, the stroke is rendered based on the stroke input in a piecewise linear fashion, simultaneously constrained by the constraint path and rendered based on how the drawing tool is used.

In implementations of path-constrained drawing with visual properties based on a drawing tool, a digital artwork editing system includes a user interface in which a constraint path can be designated in a digital artwork. A stroke input can be sampled as it is drawn with a drawing tool and for each processing interval of the stroke input, a start point of the stroke input and a tangent line to the constraint path is determined. An end point of the stroke input is projected onto a parallel line that is through the start point and parallel to the tangent line, and a stroke is rendered along this line. Hence, the stroke is rendered based on the stroke input in a piecewise linear fashion, simultaneously constrained by the constraint path and rendered based on how the drawing tool is used.

Certain embodiments involve a graphics manipulation application using brushstroke parameters that include a maximum alpha-deposition parameter and a fractional alpha-deposition parameter. For instance, the graphics manipulation application uses an alpha flow increment computed from the maximum alpha-deposition parameter and the fractional alpha-deposition parameter to compute an output canvas color. In some embodiments, if the current canvas opacity exceeds or equals the maximum alpha-deposition parameter, the current canvas opacity is selected as the output canvas opacity. Otherwise, the graphics manipulation application computes the output canvas opacity by increasing the current canvas opacity based on the alpha flow increment. The graphics manipulation application updates a canvas portion affected by a brushstroke input to include the output canvas opacity and the output canvas color.

Certain embodiments involve a graphics manipulation application using brushstroke parameters that include a maximum alpha-deposition parameter and a fractional alpha-deposition parameter. For instance, the graphics manipulation application uses an alpha flow increment computed from the maximum alpha-deposition parameter and the fractional alpha-deposition parameter to compute an output canvas color. In some embodiments, if the current canvas opacity exceeds or equals the maximum alpha-deposition parameter, the current canvas opacity is selected as the output canvas opacity. Otherwise, the graphics manipulation application computes the output canvas opacity by increasing the current canvas opacity based on the alpha flow increment. The graphics manipulation application updates a canvas portion affected by a brushstroke input to include the output canvas opacity and the output canvas color.

A method and system for generating music uses artificial intelligence to analyze existing musical compositions and then creates a musical composition that deviates from the learned styles. Known musical compositions created by humans are presented in digitized form along with a style designator to a computer for analysis, including recognition of musical elements and association of particular styles. A music generator generates a draft musical composition for similar analysis by the computer. The computer ranks such draft musical composition for correlation with known musical elements and known styles. The music generator modifies the draft musical composition using an iterative process until the resulting musical composition is recognizable as music but is distinctive in style.