Difference between revisions of "Matchbox Tool"
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The Matchbox tool is responsible for finding duplicatre pairs in a collection of digital documents based on SIFT features and SSIM methods. Consequently the tool takes a collection path with associated parameters as input. Currently three scenarios are implemented. These are: | The Matchbox tool is responsible for finding duplicatre pairs in a collection of digital documents based on SIFT features and SSIM methods. Consequently the tool takes a collection path with associated parameters as input. Currently three scenarios are implemented. These are: | ||
| − | * Duplicate search in one turn (parameter | + | * Duplicate search in one turn (parameter 'all') |
| − | * Professional duplicate search (experienced user can execute particular step in | + | * Professional duplicate search (experienced user can execute particular step in 'FindDuplicates' workflow) |
* Quick check if two documents are duplicates (based on previous BoW dictionary). | * Quick check if two documents are duplicates (based on previous BoW dictionary). | ||
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3. Create visual histogram for each image document | 3. Create visual histogram for each image document | ||
| − | 4. Detect similar images based on visual histogram and local descriptors. Evaluate similarity score | + | 4. Detect similar images based on visual histogram and local descriptors. Evaluate similarity score – pair-wise comparison of corresponding keyword frequency histograms for all documents. Conduct structural similarity analysis applying Sturctural SIMilarity (SSIM) approach (1 means identical and 0 means very different) |
* Rotate | * Rotate | ||
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Usage: | Usage: | ||
| − | FindDuplicates script can be invoked from command line. For standard usage two parameters are required: path to the collection documents and | + | FindDuplicates script can be invoked from command line. For standard usage two parameters are required: path to the collection documents and 'all'. |
scape/pc-qa-matchbox/Python# python2.7 FindDuplicates.py h | scape/pc-qa-matchbox/Python# python2.7 FindDuplicates.py h | ||
| − | usage: FindDuplicates.py [-h] [-threads | + | usage: FindDuplicates.py [-h] [\--threads THREADS] [\--sdk SDK] [\--precluster PRECLUSTER] [\--clahe CLAHE] [\--config CONFIG] [\--featdir FEATDIR] [\--bowsize BOWSIZE] [\--csv] [-v] dir all,extract,compare,train,bowhist,clean |
= User Experiences = | = User Experiences = | ||
Latest revision as of 14:09, 6 December 2021
Description[edit]
The Matchbox tool is responsible for finding duplicatre pairs in a collection of digital documents based on SIFT features and SSIM methods. Consequently the tool takes a collection path with associated parameters as input. Currently three scenarios are implemented. These are:
- Duplicate search in one turn (parameter 'all')
- Professional duplicate search (experienced user can execute particular step in 'FindDuplicates' workflow)
- Quick check if two documents are duplicates (based on previous BoW dictionary).
Further parameters that influence and adjust duplicate analysis are currently investigated.
Image processing method:
The image processing algorithm can be described in 4 steps:
1. Document feature extraction
- Interest point detection (applying Scale Invariant Feature Transform (SIFT) keypoint extraction)
- Derivation of local feature descriptors (invariant to geometrical or radiometrical distortions)
2. Learning visual dictionary
- Clustering method applied to all SIFT descriptors of all images using k-means algorithm
- Run over collection and collect local descriptors in a visual dictionary using Bag-Of-Words (BoW) algorithm
3. Create visual histogram for each image document
4. Detect similar images based on visual histogram and local descriptors. Evaluate similarity score – pair-wise comparison of corresponding keyword frequency histograms for all documents. Conduct structural similarity analysis applying Sturctural SIMilarity (SSIM) approach (1 means identical and 0 means very different)
- Rotate
- Scale
- Mask
- Overlaying
Usage:
FindDuplicates script can be invoked from command line. For standard usage two parameters are required: path to the collection documents and 'all'.
scape/pc-qa-matchbox/Python# python2.7 FindDuplicates.py h
usage: FindDuplicates.py [-h] [\--threads THREADS] [\--sdk SDK] [\--precluster PRECLUSTER] [\--clahe CLAHE] [\--config CONFIG] [\--featdir FEATDIR] [\--bowsize BOWSIZE] [\--csv] [-v] dir all,extract,compare,train,bowhist,clean
User Experiences[edit]
currently installed at Austrian National Library