ridm@nrct.go.th   ระบบคลังข้อมูลงานวิจัยไทย   รายการโปรดที่คุณเลือกไว้

Determination of actual object size distribution from direct imaging

หน่วยงาน Nanyang Technological University, Singapore

รายละเอียด

ชื่อเรื่อง : Determination of actual object size distribution from direct imaging
นักวิจัย : Hossain, Md. Iqbal , Chen, Tao , Yang, Yanhui , Lau, Raymond
คำค้น : DRNTU::Engineering::Chemical engineering::Processes and operations.
หน่วยงาน : Nanyang Technological University, Singapore
ผู้ร่วมงาน : -
ปีพิมพ์ : 2552
อ้างอิง : Hossain, M. I., Chen, T., Yang, Y. H., & Lau, R. (2009). Determination of Actual Object Size Distribution from Direct Imaging. Industrial & Engineering Chemistry Research, 48, 10136-10146. , 0888-5885 , http://hdl.handle.net/10220/6971 , http://dx.doi.org/10.1021/ie900857m , 149015
ที่มา : -
ความเชี่ยวชาญ : -
ความสัมพันธ์ : Industrial & engineering chemistry research
ขอบเขตของเนื้อหา : -
บทคัดย่อ/คำอธิบาย :

Direct imaging is a technique commonly used in the study of particle, bubble, and droplet size distribution in a dynamic system. Objects such as particles, bubbles, and droplets can be present at various distances from the imaging device when images are captured. Hence, the location of the object will need to be known in order to determine the actual size of an individual object. However, the location of the object cannot be determined from a single image. A single calibration scale defined at the focusing plane is normally used for the determination of all the object sizes from images. When the focus is close to the imaging device, the change in magnification with location is large. The size distribution obtained from the use of a single calibration scale would thus give a considerable deviation from the actual size distribution. In this study, a statistical method is proposed to reconstruct the actual object size distribution from the experimental object size distribution obtained from images using a single calibration scale defined at the focusing plane. Experiments are performed to validate the accuracy of the proposed method on the particle size distribution determination in a settling system. The stability of the proposed method is also analyzed theoretically for imaging devices with different depth-of-field (DOF), focusing location, and change in magnification with distance.

บรรณานุกรม :
Hossain, Md. Iqbal , Chen, Tao , Yang, Yanhui , Lau, Raymond . (2552). Determination of actual object size distribution from direct imaging.
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Hossain, Md. Iqbal , Chen, Tao , Yang, Yanhui , Lau, Raymond . 2552. "Determination of actual object size distribution from direct imaging".
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Hossain, Md. Iqbal , Chen, Tao , Yang, Yanhui , Lau, Raymond . "Determination of actual object size distribution from direct imaging."
    กรุงเทพมหานคร : Nanyang Technological University, Singapore, 2552. Print.
Hossain, Md. Iqbal , Chen, Tao , Yang, Yanhui , Lau, Raymond . Determination of actual object size distribution from direct imaging. กรุงเทพมหานคร : Nanyang Technological University, Singapore; 2552.