Application of qualitative biospeckle methods for the identification of scar region in a green orange

2018 ◽  
Vol 32 (09) ◽  
pp. 1850113 ◽  
Author(s):  
R. Retheesh ◽  
Md. Zaheer Ansari ◽  
P. Radhakrishnan ◽  
A. Mujeeb

This study demonstrates the feasibility of a view-based method, the motion history image (MHI) to map biospeckle activity around the scar region in a green orange fruit. The comparison of MHI with the routine intensity-based methods validated the effectiveness of the proposed method. The results show that MHI can be implementated as an alternative online image processing tool in the biospeckle analysis.

2013 ◽  
Vol 25 (2) ◽  
pp. 355-363
Author(s):  
Taku Nakamura ◽  
◽  
Fuminobu Kimura ◽  
Akio Yamamoto

This paper describes the development of a tactile sensor that measures contact pressure distribution (CPD) within a sensor probe that emulates the human fingertip. The aim of development is to provide CPDs plausible enough to be utilized in performance evaluation or parameter calibration of a tactile softness display. The developed sensor system observes twodimensional photoelasticity of the finger-shaped sensor probe in a circular polariscope setup and visualizes CPDs using online image processing. Through considerations of sensor probe design and material, the sensor visualized CPDs on various surfaces with a spatial resolution of 2 mm and up to 2 N of contact force. Experimental results demonstrate the capability of the sensor to discriminate among given soft samples by different CPDs.


2019 ◽  
Vol 5 (4) ◽  
pp. eaaw0683 ◽  
Author(s):  
Hongqiang Ma ◽  
Jianquan Xu ◽  
Yang Liu

High-throughput nanoscopy becomes increasingly important for unraveling complex biological processes from a large heterogeneous cell population at a nanoscale resolution. High-density emitter localization combined with a large field of view and fast imaging frame rate is commonly used to achieve a high imaging throughput, but the image processing speed and the presence of heterogeneous background in the dense emitter scenario remain a bottleneck. Here, we present a simple non-iterative approach, referred to as WindSTORM, to achieve high-speed high-density emitter localization with robust performance for various image characteristics. We demonstrate that WindSTORM improves the computation speed by two orders of magnitude on CPU and three orders of magnitude upon GPU acceleration to realize online image processing, without compromising localization accuracy. Further, WindSTORM is highly robust to maximize the localization accuracy and minimize the image artifacts in the presence of nonuniform background. WindSTORM paves the way for next generation high-throughput nanoscopy.


Author(s):  
Zhongyue Da ◽  
Wenjie Yang ◽  
Shuai Shao ◽  
Xinggen Qian ◽  
Shun Pan ◽  
...  

2018 ◽  
Vol 25 (03) ◽  
pp. 144-152
Author(s):  
Wang He Xi Ge Tu ◽  
Bolormaa D

Quality control and classification of agricultural products is an important component of agricultural production and sales. Use MATLAB 2010 software with image processing technology to create the quality classification of the oranges (diameter, perimeter, and field) based on the fruits. Prior to the quality classification, collecting orange tree images (taking photos from scratch), and then drawing a scratchy image. Comparing the ratio between the orange fruit diameter, perimeter, pixel and actual size, the fruit of the fruit is compared with the results of the Jeju Citrus Commission. The comparisons of these results indicate that the orange diametre pixels represent the actual amount of orange in terms of more accurate than the other two pixels (perimeter and area). This will be used for further research. Хэмжээнд тулгуурлан жүрж жимсний чанарын ангилалын судалгаа Хураангуй:  Хөдөө аж ахуйн бүтээгдэхүүний чанарын хяналт ба ангилал нь хөдөө аж ахуйн үйлдвэрлэх ба борлуулалтын чухал бүрэлдэхүүн хэсэг юм. Тус судалганы ажилд дижтал зураг боловсруулалтийн технологыг ашиглан MATLAB 2010 програм хангамж дээр жүрж жимсийн хэмжээнд суурилан (диаметр, периметр, талбай) чанарын ангилал хийб. Чанарын ангилал хийхээс өмнө жүрж жимсийн модны зураг цуглуулж (дүрбэн талаас журж модны зургийг авна), дахяд модны зурган урдчилэн дүрс боловсруулалт хинэ. Эцүсд жүрж жимсний диаметр, периметр, талбайин пиксел ба бодит хэмжээний хоорондох харьцааг тодорхойлон жимсйиг Jeju Citrus Commission жимсний хэмжээг судалсан үр дүнтай харьцуулэб. Эдгээр үр дүнгийн харьцуулалтаас харахад жүрж жимсний диаметрийн пиксел нь бусад хоёр пиксел (периметр ба талбай)-ээс илүү нарийвчлалтайгаар жүржйин бодит хэмжээг илэрхийлсэн байна. Үүнийг цаашдын судалгааны ажилдаа хэрэглэх болно. Түлхүүр үг: Дижитал дүрс боловсруулах, Хоёртын зураг, Шуугиан, Өнгөний орон зай, Зураг сигментчилэх


1995 ◽  
Vol 28 (6) ◽  
pp. 125-128
Author(s):  
Naoshi Kondo ◽  
Haruhiko Murase ◽  
Mitsuji Monta ◽  
Yasunori Shibano ◽  
Kentaro Mohri

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