Interactive color palette interface for digital painting

A non-transitory computer readable medium having instructions encoded thereon that when executed by one or more computer processors cause the one or more computer processors to perform a process comprising:

• assigning a first set of attributes to a first pixel group, the first set of attributes including a first reference coordinate point, a first color value, and a first size value, the first reference coordinate point defining a location of the first pixel group within an interactive palette interface (GUI), the first color value defining a color of the first pixel group, and the first size value defining a number of pixels included in the first pixel group;
• assigning a second set of attributes to a second pixel group, the second set of attributes including a second reference coordinate point, a second color value, and a second size value, the second reference coordinate point defining a location of the second pixel group within the GUI, the second color value defining a color of the second pixel group, and the second size value defining a number of pixels included in the second pixel group;
• calculating a third color value defining a color of an isosurface pixel at a third reference coordinate point, the isosurface pixel being contiguous with, and different from, the pixels in the first and second pixel groups, the third color value being a parametric function of each of the first and second reference coordinate points, the first and second color values, and the first and second size values;
• and
• rendering, in the GUI, the isosurface pixel at the third reference coordinate point using the third color value.

A system for converting mechanical markings on hardcopy textual content to digital annotations in a digital document file, the system comprising:

• a storage;
• and
• a processor operatively coupled to the storage, the processor configured to execute instructions stored in the storage that when executed cause the processor to carry out a process including
• step for assigning a first set of attributes to a first pixel group, the first set of attributes including a first reference coordinate point, a first color value, and a first size value, the first reference coordinate point defining a location of the first pixel group within an interactive palette interface (GUI), the first color value defining a color of the first pixel group, and the first size value defining a number of pixels included in the first pixel group;
• step for assigning a second set of attributes to a second pixel group, the second set of attributes including a second reference coordinate point, a second color value, and a second size value, the second reference coordinate point defining a location of the second pixel group within the GUI, the second color value defining a color of the second pixel group, and the second size value defining a number of pixels included in the second pixel group;
• step for calculating a third color value defining a color of an isosurface pixel at a third reference coordinate point, the isosurface pixel being contiguous with, and different from, the pixels in the first and second pixel groups, the third color value being a parametric function of each of the first and second reference coordinate points, the first and second color values, and the first and second size values;
• and
• rendering, in the GUI, the isosurface pixel at the third reference coordinate point using the third color value.