Stroke Extraction Offline handwriting recognition Noise, faint - - PowerPoint PPT Presentation

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Jun 16, 2023 432 likes •650 views

Stroke Extraction Offline handwriting recognition Noise, faint strokes, and gaps Related Work Skeletonization Local Search Graph Search Intelligent Scissors Least-cost search of an image to find an edge Weighted

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Stroke Extraction

Offline handwriting

recognition

Noise, faint strokes,

and gaps

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Related Work

Skeletonization
Local Search
Graph Search

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Intelligent Scissors

Least-cost search of an image to

find an edge

Weighted sum of several gradient

features

Optimal path from seed point to

every other point in the image

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Intelligent Pen - Kevin Bauer

Like Intelligent Scissors but

without user interaction

Multiple expanding wavefronts
Creates new seeds on the fly as

it builds out

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Intelligent Pen

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Think “edge detection on trees”
Find the difference between the

wavefront counts for two nodes

Keep track of largest difference
Threshold on differences

Finite Differences

50 100 10 160 160 160 150 50 100 Wavefront

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Path Cooling / New Seed

Large wavefront are slow and

error prone

Instead, smaller wavefront
Create new seeds at end points

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Future Work - Include Direction

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