TY - JOUR T1 - Dynamic Speckle Patterns (DSP) Analysis for Non-destructive Quality Assessment of Apple fruit during Storage TT - تحلیل تصاویر نقطه‌ای دینامیکی (DSP) برای ارزیابی غیر مخرب کیفیت میوه سیب در طول مدت انبارداری JF - opsi JO - opsi VL - 21 IS - 0 UR - http://opsi.ir/article-1-465-en.html Y1 - 2015 SP - 77 EP - 80 KW - Dynamic Speckle Pattern KW - Non-destructive KW - Quality KW - Laser KW - Inertia Moment N2 - In this research, dynamic speckle patterns (DSP) at two wavelengths of 680nm and 780nm were acquired and analyzed for non-destructive quality assessment of apple fruit during storage. To this end, time history of speckle patterns (THSP) were created. Then, the statistical feature of inertia moment (IM) was extracted from the images to evaluate DSP activity of the samples during storage. Results indicated that DSP activity of apples is significantly affected by chlorophyll content. Moreover, DSP activity at 680nm was more than that at 780nm. On the other hand, DSP activity of the samples in the first and second months of the storage increased then decreased until the fourth month of the storage and after that increased again, relatively. M3 ER -