[1] Draijer M. Hondebrink E, van Leeuwen T, et al. Review of laser speckle contrast techniques for visualizing tissue perfusion[J]. Lasers in Medical Science, 24, 639-651(2009).

[2] Zdunek A, Herppich W B. Relation of biospeckle activity with chlorophyll content in apples[J]. Postharvest Biology and Technology, 64, 58-63(2012). http://www.sciencedirect.com/science/article/pii/S0925521411002213

[3] Zdunek A, Cybulska J. Relation of biospeckle activity with quality attributes of apples[J]. Sensors, 11, 6317-6327(2011). http://europepmc.org/articles/PMC3231453/

[4] Adamiak A, Zdunek A, Kurenda A et al. Application of the biospeckle method for monitoring bull's eye rot development and quality changes of apples subjected to various storage methods: preliminary studies[J]. Sensors, 12, 3215-3227(2012). http://pubmedcentralcanada.ca/pmcc/articles/PMC3376596/

[5] Kurenda A, Adamiak A, Zdunek A. Temperature effect on apple biospeckle activity evaluated with different indices[J]. Postharvest Biology and Technology, 67, 118-123(2012). http://www.sciencedirect.com/science/article/pii/S092552141200004X

[6] Braga R A, Dupuy L, Pasqual M et al. Live biospeckle laser imaging of root tissues[J]. European Biophysics Journal, 38, 679-686(2009). http://www.ncbi.nlm.nih.gov/pubmed/19266191

[7] Salambue R, Adnan A, Shiddiq M. Investigation of the ripeness of oil palm fresh fruit bunches usingbio-speckle imaging[J]. Journal of Physics: Conference Series, 978, 012071(2018).

[8] Dhanotia J, Bopche L, Bhatia V et al. Quality assessment of medicinal leaves through biospeckle technique[M]. ∥Dhanotia J, Bopche L, Bhatia V, et al. Springer Proceedings in Physics. Singapore: Springer Singapore, 389-394(2017).

[9] Vivas P G, Resende L S. BragaJr R A, et al. Biospeckle activity in coffee seeds is associated non-destructively with seedling quality[J]. Annals of Applied Biology, 170, 141-149(2017). http://onlinelibrary.wiley.com/doi/10.1111/aab.12314/pdf

[10] Madjarova V, Toyooka S, Nagasawa H et al. Blooming processes in flowers studied by dynamic electronic speckle pattern interferometry (DESPI)[J]. Optical Review, 10, 370-374(2003). http://link.springer.com/article/10.1007/s10043-003-0370-7

[11] Romano G, Argyropoulos D, Nagle M et al. Combination of digital images and laser light to predict moisture content and color of bell pepper simultaneously during drying[J]. Journal of Food Engineering, 109, 438-448(2012). http://europepmc.org/abstract/AGR/IND500675536

[12] Hu M H, Dong Q L, Liu B L et al. Application of biospeckle on analysis of agricultural products quality[J]. Transactions of the Chinese Society of Agricultural Engineering, 29, 284-292(2013).

[13] Zdunek A, Adamiak A, Pieczywek P M et al. The biospeckle method for the investigation of agricultural crops: a review[J]. Optics and Lasers in Engineering, 52, 276-285(2014). http://www.sciencedirect.com/science/article/pii/S0143816613002030

[14] Rabelo G F. Braga Jr R A, Fabbro I M D. Laser speckle techniques in quality evaluation of orange fruits[J]. Revista Brasileira de Engenharia Agrícola e Ambiental, 9, 570-575(2005).

[15] Retheesh R, Samuel B, Radhakrishnan P et al. Use of laser biospeckle for the evaluation of fruit ripening[J]. Journal of Pure Applied and Industrial Physics, 6, 65-70(2016).

[16] Skic A, Szymańska-Chargot M, Kruk B et al. Determination of the optimum harvest window for apples using the non-destructive biospeckle method[J]. Sensors, 16, 661(2016). http://pubmedcentralcanada.ca/pmcc/articles/PMC4883352/

[17] Alves J A. Braga Jr R A, Vilas Boas E V. Identification of respiration rate and water activity change in fresh-cut carrots using biospeckle laser and frequency approach[J]. Postharvest Biology and Technology, 86, 381-386(2013).

[18] Romero G G, Martinez C C, Alanís E E et al. Bio-speckle activity applied to the assessment of tomato fruit ripening[J]. Biosystems Engineering, 103, 116-119(2009). http://europepmc.org/abstract/agr/ind44191509

[19] Fracarolli J A, Enes A M. Dal Fabbro I M, et al. Laser transmission through vegetative material[J]. World Academy of Science Engineering and Technology, 6, 892-894(2012).

[20] Mulone C, Budini N, Vincitorio F M et al. Biospeckle activity evolution of strawberries[J]. SOP Transactions on Applied Physics, 1, 65-73(2014).

[21] Pajuelo M, Baldwin G, Rabal H et al. Bio-speckle assessment of bruising in fruits[J]. Optics and Lasers in Engineering, 40, 13-24(2003). http://www.sciencedirect.com/science/article/pii/S0143816602000635

[22] Kumari S, Nirala A K. Biospeckle technique for the non-destructive differentiation of bruised and fresh regions of an Indian apple using intensity-based algorithms[J]. Laser Physics, 26, 115601(2016). http://adsabs.harvard.edu/abs/2016LaPhy..26k5601K

[23] Samuel B, Retheesh R, Ansari M Z et al. Cross-correlation and time history analysis of laser dynamic specklegram imaging for quality evaluation and assessment of certain seasonal fruits and vegetables[J]. Laser Physics, 27, 105601(2017). http://adsabs.harvard.edu/abs/2017LaPhy..27j5601S

[24] Samuel B. R R, Nampoori V P N, et al. Nondestructive evaluation of fruits using cross correlation and time history of biospeckle pattern. [C]∥Proceedings of 2016 National Seminar and International Exhibition on Nondestructive Evaluation, 470-473(2016).

[25] Vega F, Torres M C. Automatic detection of bruises in fruit using biospeckle techniques. [C]∥Symposium of Signals, Images and Artificial Vision, 978, 1-5(2013).

[26] Yan L, Liu J X, Men S. The biospeckle method for early damage detection of fruits[J]. Modern Physics Letters B, 31, 1740034(2017). http://www.worldscientific.com/doi/ref/10.1142/S0217984917400346

[27] Liu H B, Gao Y W, Lu J Z et al. Pear defect and stem/calyx discrimination using laser speckle[J]. Transactions of the Chinese Society of Agricultural Engineering, 31, 319-324(2015).

[28] Retheesh R, Ansari M Z, Radhakrishnan P et al. Application of qualitative biospeckle methods for the identification of scar region in a green orange[J]. Modern Physics Letters B, 32, 1850113(2018). http://www.worldscientific.com/doi/ref/10.1142/S0217984918501130

[29] Mulone C, Budini N, Vincitorio F M et al. Analysis of strawberry ripening by dynamic speckle measurements[J]. Proceedings of SPIE, 8785, 87851X(2013). http://proceedings.spiedigitallibrary.org/mobile/proceeding.aspx?articleid=1782255

[30] Hashim N, Janius R, Baranyai L et al. Application of RGB and backscattering imaging to detect chilling injury symptoms in banana. [C]∥CIGR Workshop on Image Analysis in Agriculture, Budapest., 66-78(2010).

[31] Hashim N, Janius R B, Rahman R A et al. Changes of backscattering parameters during chilling injury in bananas[J]. Journal of Engineering Science and Technology, 9, 314-325(2014).

[32] Arefi A, Moghaddam P A, Hassanpour A et al. Non-destructive identification of mealy apples using biospeckle imaging[J]. Postharvest Biology and Technology, 112, 266-276(2016). http://www.sciencedirect.com/science/article/pii/S092552141530106X

[33] Arefi A, Moghaddam P A, Motlagh A M et al. Towards real-time speckle image processing for mealiness assessment in apple fruit[J]. International Journal of Food Properties, 20, S3135-S3148(2017). http://www.tandfonline.com/doi/full/10.1080/10942912.2017.1404474

[34] Szymanska-Chargot M, Adamiak A, Zdunek A. Pre-harvest monitoring of apple fruits development with the use of biospeckle method[J]. Scientia Horticulturae, 145, 23-28(2012). http://www.sciencedirect.com/science/article/pii/S0304423812003512

[35] Pieczywek P M, Cybulska J, Szymańska-Chargot M et al. Early detection of fungal infection of stored apple fruit with optical sensors: comparison of biospeckle, hyperspectral imaging and chlorophyll fluorescence[J]. Food Control, 85, 327-338(2018).

[36] Romano G, Nagle M, Argyropoulos D et al. Laser light backscattering to monitor moisture content, soluble solid content and hardness of apple tissue during drying[J]. Journal of Food Engineering, 104, 657-662(2011). http://www.sciencedirect.com/science/article/pii/S0260877411000380

[37] Kurenda A, Pieczywek P M, Adamiak A et al. Effect of cytochalasin B, lantrunculin B, colchicine, cycloheximid, dimethyl sulfoxide and ion channel inhibitors on biospeckle activity in apple tissue[J]. Food Biophysics, 8, 290-296(2013). http://europepmc.org/articles/pmc3825619/

[38] Kurenda A, Zdunek A, Schlüter O et al. VIS/NIR spectroscopy, chlorophyll fluorescence, biospeckle and backscattering to evaluate changes in apples subjected to hydrostatic pressures[J]. Postharvest Biology and Technology, 96, 88-98(2014). http://www.sciencedirect.com/science/article/pii/S0925521414001355

[39] Pieczywek P M, Cybulska J, Zdunek A et al. Exponentially smoothed Fujii index for online imaging of biospeckle spatial activity[J]. Computers and Electronics in Agriculture, 142, 70-78(2017).

[40] Ansari M D Z, Nirala A K. Biospeckle activity measurement of Indian fruits using the methods of cross-correlation and inertia moments[J]. Optik, 124, 2180-2186(2013). http://www.sciencedirect.com/science/article/pii/S0030402612004949

[41] Ansari M Z, Minz P D, Nirala A K. Fruit quality evaluation using biospeckle techniques. [C]∥2012 1st International Conference on Recent Advances in Information Technology (RAIT), 873-876(2012).

[42] Ansari M D Z, Nirala A K. Biospeckle techniques in quality evaluation of indian fruits[J]. World Academy of Science, Engineering and Technology, 6, 978-982(2012).

[43] Ansari M Z, Nirala A K. Assessment of bio-activity using the methods of inertia moment and absolute value of the differences[J]. Optik, 124, 512-516(2013). http://www.sciencedirect.com/science/article/pii/S0030402612000095

[44] Ansari M Z, Nirala A K. Assessment of fruits during shelf-life storage using biospeckle laser[J]. Agricultural Engineering International: CIGR Journal, 16, 223-229(2014).

[45] Minz P D, Nirala A K. Assessment of bio-activity of the fruits using intensity based methods. [C]∥2013 International Conference on Microwave and Photonics (ICMAP), 1-4(2013).

[46] Peixoto L S, Fracarolli J A, Aguiar R H. Evaluation of minimally processed apples with application of edible films through biospeckle[J]. Journal of Agricultural Science and Technology B, 6, 201-208(2016). http://www.cqvip.com/QK/71212X/201603/671959505.html

[47] Jamshidi B, Arefi A. Comparison of different feature extraction techniques in biospeckle images for nondestructive assessment of apple firmness. [C]∥Proceedings of the 3rd Iranian International NDT Conference(2016).

[48] Nassif R, Nader C A, Afif C et al. Detection of Golden apples’ climacteric peak by laser biospeckle measurements[J]. Applied Optics, 53, 8276-8282(2014). http://europepmc.org/abstract/med/25608070

[49] Nassif R, Pellen F, Magné C et al. Scattering through fruits during ripening: laser speckle technique correlated to biochemical and fluorescence measurements[J]. Optics Express, 20, 23887-23897(2012). http://europepmc.org/abstract/MED/23188354

[50] Nassif R, Pellen F, Magne C et al. Laser speckle dynamic for monitoring fruits maturation[J]. Proceedings of SPIE, 8413, 84131G(2012). http://proceedings.spiedigitallibrary.org/proceeding.aspx?articleid=1358282

[51] Affeldt H A, Heck R D. Optics for produce quality evaluation: laser diffusion for orange peel thickness measurement[J]. Proceedings of SPIE, 1836, 252-261(1993). http://spie.org/Publications/Proceedings/Paper/10.1117/12.144034

[52] Bergkvist A. Biospeckle-based study of the line profile of light scattered in strawberries[J]. Lund Reports in Atomic Physics(1997).

[53] Hashim N, Adebayo S E, Abdan K et al. Comparative study of transform-based image texture analysis for the evaluation of banana quality using an optical backscattering system[J]. Postharvest Biology and Technology, 135, 38-50(2018). http://www.sciencedirect.com/science/article/pii/S0925521417304143

[54] Kalaj Y R, Geyer M, Herppich W B. Non-destructive evaluation of edible coatings effects on keeping quality of European plums (Prunus domestica L.) by laser light backscattering imaging[J]. Erwerbs-Obstbau, 60, 311-320(2018).

[55] Kalaj Y R, Mollazade K, Herppich W et al. Changes of backscattering imaging parameter during plum fruit development on the tree and during storage[J]. Scientia Horticulturae, 202, 63-69(2016). http://agris.fao.org/agris-search/search.do?recordID=US201600187633

[56] Mohd Ali M, Hashim N, Bejo S K et al. Laser-induced backscattering imaging for classification of seeded and seedless watermelons[J]. Computers and Electronics in Agriculture, 140, 311-316(2017).

[57] Udomkun P, Nagle M, Mahayothee B et al. Laser-based imaging system for non-invasive monitoring of quality changes of papaya during drying[J]. Food Control, 42, 225-233(2014). http://www.sciencedirect.com/science/article/pii/S0956713514000796

[58] Marcondes M S, Silva K G, Fujii A K et al. Sugar cane (Saccharum officinarum L.) analysis through biospeckle and spectroscopy (NIR)[J]. Journal of Agricultural Science and Technology B, 7, 62-68(2017). http://www.cqvip.com/QK/71212X/201701/673331142.html

[59] Ansari M Z, Nirala A K. Assessment of biospeckle activity of lemon fruit[J]. Agricultural Engineering International: CIGR Journal, 18, 190-200(2016).

[60] Baranyai L, Zude M. Analysis of laser light propagation in kiwifruit using backscattering imaging and Monte Carlo simulation[J]. Computers and Electronics in Agriculture, 69, 33-39(2009). http://www.cabdirect.org/abstracts/20093267275.html

[61] Amaral I C, de Resende J V, Braga Jr R A et al. . Evaluation of the adsorption behavior of freeze-dried passion fruit pulp with added carriers by traditional biospeckle laser techniques[J]. Drying Technology, 35, 55-65(2017). http://www.tandfonline.com/doi/abs/10.1080/07373937.2016.1159575

[62] Zhu N, Lin M, Nie Y et al. Study on the quantitative measurement of firmness distribution maps at the pixel level inside peach pulp[J]. Computers and Electronics in Agriculture, 130, 48-56(2016). http://www.sciencedirect.com/science/article/pii/S0168169916303404

[63] Duan Y T, Li G Y, Gao Z. Review of laser biospeckle measurement technology[J]. Laser & Optoelectronics Progress, 50, 17-29(2013).

[64] Shi B Y, Bi K, Chen S H et al. Application of laser speckle technology on the detection of agricultural products[J]. Chinese Agricultural Science Bulletin, 27, 410-415(2011).

[65] Minz P D, Nirala A K. Bio-activity assessment of fruits using Generalized Difference and Parameterized Fujii method[J]. Optik, 125, 314-317(2014). http://www.sciencedirect.com/science/article/pii/S0030402613009303

[66] Cheng H Y, Luo Q M, Zeng S Q et al. Modified laser speckle imaging method with improved spatial resolution[J]. Journal of Biomedical Optics, 8, 559-564(2003). http://www.ncbi.nlm.nih.gov/pubmed/12880364?dopt=AbstractPlus

[67] Liu Q. Laser speckle contrast imaging and its biomedical applications[D]. Wuhan: Huazhong University of Science and Technology(2005).

[68] Qiu J J, Zhang H Y, Luo W H et al. Impact of averaged image speckle size on laser speckle imaging[J]. Acta Optica Sinica, 29, 1863-1867(2009).

[69] Zhang M J, Wang YH, Zhao G F et al. Climate change during winter wheat growing period and its impacts on winter wheat yield in Puyang of Henen province[J]. Chinese Journal of Agrometeorology, 30, 223-229(2009).

[70] Cai J R, Liu M L, Sun L et al. Laser speckle image detection of chilled pork freshness based on improved moment of inertia algorithm[J]. Transactions of the Chinese Society of Agricultural Engineering, 33, 268-274(2017).

[71] Minz P D, Nirala A K. Intensity based algorithms for biospeckle analysis[J]. Optik, 125, 3633-3636(2014). http://www.sciencedirect.com/science/article/pii/S0030402614002435

[72] Ansari M Z, Nirala A K. Biospeckle numerical assessment followed by speckle quality tests[J]. Optik, 127, 5825-5833(2016). http://www.sciencedirect.com/science/article/pii/S0030402616302819

[73] Cariñe J, Guzmán R. Torres-Ruiz F A. Algorithm for dynamic Speckle pattern processing[J]. Optics and Lasers in Engineering, 82, 56-61(2016).