US 2019/0102079 A1 · ENHANCED DIGITAL INK ERASING

Abstract

Techniques are presented for enhanced erasing of digital ink. The ink erasing feature of a content creation application can preserve the complex shapes that can result from partial erasure of ink strokes. The ink erasing feature can receive ink stroke data from an ink stroke and display the ink stroke. The ink erasing feature can then receive and display an eraser stroke that contacts the ink stroke. Once the eraser stroke is received, the ink erasing feature can determine whether any eraser segment of the eraser stroke contacts the ink stroke. If an eraser segment does not contact the ink stroke, the ink erasing feature discards the eraser segment. If an eraser segment does contact the ink stroke, the ink erasing feature can update the ink stroke data based on amount of overlap and location of contact between the eraser stroke and the ink stroke.

Claims20

Dependent claims

A method of enhanced erasing of digital ink, the method comprising:

receiving ink stroke data of an ink stroke, wherein the ink stroke data comprises a set of ink points, and wherein two adjacent ink points of the set of ink points are connected by a corresponding ink segment;
displaying the ink stroke at a client device;
receiving an eraser stroke that contacts the ink stroke, the eraser stroke having eraser stroke data, wherein the eraser stroke data comprises a set of eraser points, and wherein two adjacent eraser points are connected by an eraser segment;
displaying the eraser stroke at the client device;
discarding any of the eraser segments of the eraser stroke that do not contact the ink stroke;
and
for any of the eraser segments of the eraser stroke that contact the ink stroke, updating the ink stroke data based on amount of overlap and location of contact between the eraser stroke and the ink stroke.

4 more elements

An apparatus comprising:

one or more computer readable storage media;
a processing system;
and
program instructions stored on at least one of the one or more computer readable media that, when executed by the processing system, direct the processing system to:
receive ink stroke data of an ink stroke, wherein the ink stroke data comprises a set of ink points, and wherein two adjacent ink points of the set of ink points are connected by a corresponding ink segment;
display the ink stroke;
receive an eraser stroke that contacts the ink stroke, the eraser stroke having eraser stroke data, wherein the eraser stroke data comprises a set of eraser points, and wherein two adjacent eraser points are connected by an eraser segment;
display the eraser stroke;
discard any of the eraser segments of the eraser stroke that do not contact the ink stroke;
and
for any of the eraser segments of the eraser stroke that contact the ink stroke, update the ink stroke data based on amount of overlap and location of contact between the eraser stroke and the ink stroke.

8 more elements

A computer readable storage medium having instructions stored thereon that, when executed by a processing system, direct the processing system to:

receive ink stroke data of an ink stroke, wherein the ink stroke data comprises a set of ink points, and wherein two adjacent ink points of the set of ink points are connected by a corresponding ink segment;
display the ink stroke at a client device;
receive an eraser stroke that contacts the ink stroke, the eraser stroke having eraser stroke data, wherein the eraser stroke data comprises a set of eraser points, and wherein two adjacent eraser points are connected by an eraser segment;
display the eraser stroke at the client device;
discard any of the eraser segments of the eraser stroke that do not contact the ink stroke;
and
for any of the eraser segments of the eraser stroke that contact the ink stroke,
update the ink stroke data based on amount of overlap and location of contact between the eraser stroke and the ink stroke.

5 more elements

Dependencies are inferred from the claim text.

Enhanced digital ink erasing

Life of this patent

Enhanced digital ink erasing

Life of this patent

Abstract

Claims20