PROCESSO PARA RECONHECER COMO UM UNICO OBJETO GRAFICO,UMA PLURALIDADE DE TRACOS DESCONECTADOS E PROCESSO PARA ESCREVER UMA ASSINATURA EM UM EDITOR DE OBJETOS MISTO
A computer based graphic editor has the capability of recognizing as a single graphic object a plurality of unconnected freehand strokes such as a signature. This makes possible editing a document with a signature, for example, without the various parts of the signature becoming separated and no lon...
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Zusammenfassung: | A computer based graphic editor has the capability of recognizing as a single graphic object a plurality of unconnected freehand strokes such as a signature. This makes possible editing a document with a signature, for example, without the various parts of the signature becoming separated and no longer being a viable entity. A cursor pointing device, such as a mouse with a button, is used to enter the plurality of unconnected strokes. Initially, the first point p₁ at the beginning of a stroke which is the first stroke of a plurality of unconnected strokes is read and stored with the visible attribute. As long as the mouse button is pressed, the position of the cursor is monitored and lines drawn from each successive point to the next point p₂ with each point p₂ being stored with the visible attribute. When the mouse button is released, the last read point position p₂ is stored with the invisible attribute. When the mouse button is pressed again, the first point p₁ of the next stroke is read and stored with the visible attribute, and the process repeated. When the mouse button is again pressed and released, the ending position of the previous stroke p0̸, the starting position of the current stroke p₁ and the ending position of the current stroke p₂ are compared and, if p₁ and p₂ are within a tolerance range and there exist no other points between p₁ and p₂ and if p₁ and p0̸ are within the tolerance range, then the termination of the signature is detected. |
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