19th Summer School on Image Processing Szeged - Hungary Project #5 and St ps Dávid Almási...
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![Page 1: 19th Summer School on Image Processing Szeged - Hungary Project #5 and St ps Dávid Almási University of Debrecen Severino Gomes-Neto Federal University.](https://reader033.fdocuments.in/reader033/viewer/2022042616/56649e7c5503460f94b7df0d/html5/thumbnails/1.jpg)
19th Summer School on Image ProcessingSzeged - Hungary
Project #5and St ps
DávidAlmásiUniversity
of Debrecen
SeverinoGomes-NetoFederal University ofRio Grande do Norte
MelindaKatonaUniversityof Szeged
Tamás Sámuel
TasiUniversityof Szeged
![Page 2: 19th Summer School on Image Processing Szeged - Hungary Project #5 and St ps Dávid Almási University of Debrecen Severino Gomes-Neto Federal University.](https://reader033.fdocuments.in/reader033/viewer/2022042616/56649e7c5503460f94b7df0d/html5/thumbnails/2.jpg)
Project
![Page 3: 19th Summer School on Image Processing Szeged - Hungary Project #5 and St ps Dávid Almási University of Debrecen Severino Gomes-Neto Federal University.](https://reader033.fdocuments.in/reader033/viewer/2022042616/56649e7c5503460f94b7df0d/html5/thumbnails/3.jpg)
Recognition of Doors and Steps
• Description– Appeal: Aid permanently or temporarily
blind people to know in advance the existence of doors and steps meanwhile they walk
– Input: Images from mobile phones (or webcams)
– Goal: recognize doors and steps– Tools: Matlab R2010a + Image Processing
Toolbox
Project Database Pipeline Accuracy Evaluation
![Page 4: 19th Summer School on Image Processing Szeged - Hungary Project #5 and St ps Dávid Almási University of Debrecen Severino Gomes-Neto Federal University.](https://reader033.fdocuments.in/reader033/viewer/2022042616/56649e7c5503460f94b7df0d/html5/thumbnails/4.jpg)
Database
![Page 5: 19th Summer School on Image Processing Szeged - Hungary Project #5 and St ps Dávid Almási University of Debrecen Severino Gomes-Neto Federal University.](https://reader033.fdocuments.in/reader033/viewer/2022042616/56649e7c5503460f94b7df0d/html5/thumbnails/5.jpg)
Actual PicturesProject Database Pipeline Accuracy Evaluation
StairsNon stairs
![Page 6: 19th Summer School on Image Processing Szeged - Hungary Project #5 and St ps Dávid Almási University of Debrecen Severino Gomes-Neto Federal University.](https://reader033.fdocuments.in/reader033/viewer/2022042616/56649e7c5503460f94b7df0d/html5/thumbnails/6.jpg)
Actual PicturesProject Database Pipeline Accuracy Evaluation
DoorsNon doorsNon stairs
![Page 7: 19th Summer School on Image Processing Szeged - Hungary Project #5 and St ps Dávid Almási University of Debrecen Severino Gomes-Neto Federal University.](https://reader033.fdocuments.in/reader033/viewer/2022042616/56649e7c5503460f94b7df0d/html5/thumbnails/7.jpg)
Pipeline
![Page 8: 19th Summer School on Image Processing Szeged - Hungary Project #5 and St ps Dávid Almási University of Debrecen Severino Gomes-Neto Federal University.](https://reader033.fdocuments.in/reader033/viewer/2022042616/56649e7c5503460f94b7df0d/html5/thumbnails/8.jpg)
Recognizing StepsProject Database Pipeline Accuracy Evaluation
Input Image
Gray Scaled
Crop
Histogram Equalization
Sharpening
Fourier Transform
Output Steps!
Edge Detection
![Page 9: 19th Summer School on Image Processing Szeged - Hungary Project #5 and St ps Dávid Almási University of Debrecen Severino Gomes-Neto Federal University.](https://reader033.fdocuments.in/reader033/viewer/2022042616/56649e7c5503460f94b7df0d/html5/thumbnails/9.jpg)
Recognizing DoorsProject Database Pipeline Accuracy Evaluation
Input Image
Gray Scaled
Crop
Histogram Equalization
Sharpening
Fourier Transform
Output Door!
Edge Detection
![Page 10: 19th Summer School on Image Processing Szeged - Hungary Project #5 and St ps Dávid Almási University of Debrecen Severino Gomes-Neto Federal University.](https://reader033.fdocuments.in/reader033/viewer/2022042616/56649e7c5503460f94b7df0d/html5/thumbnails/10.jpg)
Accuracy Evaluation
![Page 11: 19th Summer School on Image Processing Szeged - Hungary Project #5 and St ps Dávid Almási University of Debrecen Severino Gomes-Neto Federal University.](https://reader033.fdocuments.in/reader033/viewer/2022042616/56649e7c5503460f94b7df0d/html5/thumbnails/11.jpg)
Positives and Negatives
Positives
Negatives
StepsTrue 16 (89%) 8 (44%)*
False 2 (11%)10
(56%)*
DoorsTrue 10 (83%) 2 (50%)False 2 (17%) 2 (50%)
Project Database Pipeline Accuracy Evaluation
* Computing “out of the range” stairs as false positives. Actually, discarding those, the results are:8 true negatives (73%) and 3 false negatives (27%)