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:: دوره 7، شماره 1 - ( 3-1398 ) ::
جلد 7 شماره 1 صفحات 1-23 برگشت به فهرست نسخه ها
حذف سایه خودروها در تصاویر ویدئویی با استفاده از ویژگی آنتروپی و فاصله اقلیدسی
علی کرمی*، مسعود ورشوساز، محسن سریانی، محمد شکری
دانشگاه صنعتی خواجه نصیرالدین طوسی
چکیده:   (1141 مشاهده)
تشخیص حرکت خودرو در تصاویر ویدئویی به‌عنوان یک موضوع کلیدی در مباحث بینایی کامپیوتر محسوب میگردد. در سال‌های اخیر، روشهای گوناگونی به‌منظور استخراج خودروها پیشنهادشده است. یکی از مشکلات اصلی تشخیص خودروها در سیستمهای پردازش تصویر، سایه خودروها است. سایه خودروها به‌دلیل پیوستگی که با خود خودرو دارند، باعث تغییر ظاهر واقعی خودرو و همچنین اتصال خودروهای اطراف به یکدیگر میشوند. هدف اصلی در این تحقیق ارائه یک روش بهینه در زمینه حذف سایه خودروها با استفاده از ویژگی آنتروپی و فاصله اقلیدسی میباشد. با استفاده از ویژگیهای یاد شده، به هرکدام از پیکسلهای تصویر یک وزن اختصاص داده میشود. وزنی که به پیکسلهای مربوط به قسمت سایه و سطح آسفالت(پسزمینه) اختصاص داده میشوند خیلی نزدیک به هم هستند. زمانی که از عمل تفاضل پس‌زمینه استفاده میشود، سایهها به همراه پس‌زمینه استخراج و حذف خواهد شد. در این تحقیق از سه پایگاه داده جهت پیاده‌سازی و ارزیابی استفاده‌شده است. از شاخص‌های دقت کلی، نرخ تشخیص درست و اشتباه، و همچنین دقت تشخیص و ردیابی چند عارضهای برای نشان دادن دقت و صحت در شناسایی خودروها، استفاده شده است. با استفاده از این معیارها روش پیشنهادی با دو روش دیگر که در زمینه حذف سایه خودروها می‌باشند، مورد مقایسه قرار گرفته شد. نتایج نشان داد که روش پیشنهادی بسته به نوع شاخص بین 3 تا 12درصد دقت نتایج متغییر می‌باشد.
واژه‌های کلیدی: شناسایی خودرو، سایه، آنتروپی، فاصله اقلیدسی.
متن کامل [PDF 2202 kb]   (344 دریافت)    
نوع مطالعه: پژوهشي | موضوع مقاله: فتوگرامتری
دریافت: 1395/11/30 | پذیرش: 1396/4/3 | انتشار: 1398/3/31
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Karami A, Varshosaz M, Soryani M, shokri M. Removing car shadows in video images using entropy and Euclidean distance features. jgit. 2019; 7 (1) :1-23
URL: http://jgit.kntu.ac.ir/article-1-675-fa.html

کرمی علی، ورشوساز مسعود، سریانی محسن، شکری محمد. حذف سایه خودروها در تصاویر ویدئویی با استفاده از ویژگی آنتروپی و فاصله اقلیدسی. مهندسی فناوری اطلاعات مکانی. 1398; 7 (1) :1-23

URL: http://jgit.kntu.ac.ir/article-1-675-fa.html



دوره 7، شماره 1 - ( 3-1398 ) برگشت به فهرست نسخه ها
نشریه علمی-پژوهشی مهندسی فناوری اطلاعات مکانی Engineering Journal of Geospatial Information Technology
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