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| [](https://ci.appveyor.com/project/scivision/barron-optflow) | ||
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| # Barron Optical Flow Code | ||
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| [Original code](http://www.csd.uwo.ca/faculty/barron/FTP/) | ||
| [](https://github.com/scivision/barron-optflow/actions/workflows/ci.yml) | ||
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| [Original code](https://web.archive.org/web/20181121112545/https://www.csd.uwo.ca/faculty/barron/FTP/) | ||
| modified to run with modern compilers. | ||
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| [Examples](https://scivision.dev/barron1994opticalflow/) | ||
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| ## Build | ||
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| A C compiler is required. | ||
| Some of the programs require a Fortran compiler and/or BLAS library. | ||
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| - Linux: `apt install gcc gfortran libopenblas-dev` | ||
| - Mac: `brew install gcc openblas` | ||
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| ```sh | ||
| cmake -Bbuild | ||
| cmake --build build | ||
| cmake --workflow --preset default | ||
| ``` | ||
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| Horn-Schunck optical flow on Tree image set | ||
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| ```sh | ||
| ./horn new2binarytreet. 0.5 1.5 20 100 ../TESTDATA/TREE_DATA/TRANS out/ -B 150 150 -MH -T 5.0 | ||
| ``` | ||
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| ## Horn-Schunck | ||
| convert output to Postscript and view (can use other viewer beside Evince) | ||
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| 1. Run Horn-Schunck optical flow on Tree image set | ||
| ```sh | ||
| ./horn new2binarytreet. 0.5 1.5 20 100 ../TESTDATA/TREE_DATA/TRANS out/ -B 150 150 -MH -T 5.0 | ||
| ``` | ||
| 2. convert output to Postscript and view (can use other viewer beside Evince) | ||
| ```sh | ||
| ./flow2ps out/horn.modified.new2binarytreet.F-5.00 out/hornOF.ps | ||
| ```sh | ||
| ./flow2ps out/horn.modified.new2binarytreet.F-5.00 out/hornOF.ps | ||
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| evince out/hornOF.ps | ||
| ``` | ||
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| Lucas-Kanade optical flow on Tree image set | ||
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| evince out/hornOF.ps | ||
| ``` | ||
| ```sh | ||
| ./lucas new2binarytreet. 1.5 20 1.0 ../TESTDATA/TREE_DATA/TRANS out/ -B 150 150 | ||
| ``` | ||
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| ## Lucas-Kanade | ||
| convert output to Postscript and view (can use other viewer beside Evince) | ||
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| 1. Run Horn-Schunck optical flow on Tree image set | ||
| ```sh | ||
| ./lucas new2binarytreet. 1.5 20 1.0 ../TESTDATA/TREE_DATA/TRANS out/ -B 150 150 | ||
| ``` | ||
| 2. convert output to Postscript and view (can use other viewer beside Evince) | ||
| ```sh | ||
| ./flow2ps out/lucas.new2binarytreet.20F-1.00-1.5 out/lucas20F.ps | ||
| ```sh | ||
| ./flow2ps out/lucas.new2binarytreet.20F-1.00-1.5 out/lucas20F.ps | ||
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| evince out/lucas20F.ps | ||
| ``` | ||
| evince out/lucas20F.ps | ||
| ``` |