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Logo Recognition by Dan Chen, Lizhe Wang, Jingying Chen

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138 Logo Recognition: Theory and Practice
lg105m lg11m lg12m lg15m
lg21m lg22m lg24m lg25m
lg26m lg35m lg4m lg40m
lg46m lg45m lg46m lg47m
l
g
50m l
g
60m l
g
68m l
g
96m
FIGURE A-5: The mixed noise corrupted images.
Appendix A Test images 139
lg12h(20%) lg12h(40%) lg12h(60%)
lg4h(20%) lg4h(40%) lg4h(60%)
lg50h(20%) lg50h(40%) lg50h(60%)
FIGURE A-6: The images applied cylinder projection in horizonal direction.
140 Logo Recognition: Theory and Practice
lg12v(20%) lg12v(40%) lg12v(60%)
lg4v(20%) lg4v(40%) lg4v(60%)
l
g
50v(20%) l
g
50v(40%) l
g
50v(60%)
FIGURE A-7: The images applied cylinder projection in vertical direction.
Appendix A Test images 141
lg11_5 lg11_25 lg11_45 lg11_65 lg11_85 lg11_105
lg12_5 lg12_25 lg12_45 lg12_65 lg12_85 lg12_105
lg12_5 lg21_25 lg21_45 lg21_65 lg21_85 lg21_105
lg47_5 lg47_25 lg47_45 lg47_65 lg47_85 lg47_105
lg4_5 lg4_25 lg4_45 lg4_65 lg4_85 lg4_105
lg50_5 lg50_25 lg50_45 lg50_65 lg50_85 lg50_105
FIGURE A-8: The strip corrupted images with varying strip widths.
142 Logo Recognition: Theory and Practice
lg11g_5 lg11g_25 lg11g_45 lg11g_65 lg11g_85
lg12g_5 lg12g_25 lg12g_45 lg12g_65 lg12g_85
lg21g_5 lg21g_25 lg21g_45 lg21g_65 lg21g_85
lg47g_5 lg47g_25 lg47g_45 lg47g_65 lg47g_85
lg4g_5 lg4g_25 lg4g_45 lg4g_65 lg4g_85
l
g
50
g
_5 l
g
50
g
_25 l
g
50
g
_45 l
g
50
g
_65 l
g
50
g
_85
FIGURE A-9: The Gaussian noise corrupted images with varying standard
deviations.

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