Sökning: "speckle"

Visar resultat 1 - 5 av 103 avhandlingar innehållade ordet speckle.

  1. 1. Stereoscopic digital speckle photography

    Författare :Per Synnergren; Luleå tekniska universitet; []
    Nyckelord :ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Experimental Mechanics; Experimentell mekanik;

    Sammanfattning : .... LÄS MER

  2. 2. Combined speckle interferometry and speckle correlation for non-destructive testing

    Författare :Angelica Andersson; Luleå tekniska universitet; []
    Nyckelord :ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Experimental Mechanics; Experimentell mekanik;

    Sammanfattning : When a sample is studied during loading in a tensile test machine, the sample is often exposed to rigid body motions during loading at the same time as it deforms due to tension. Therefore, the small deformation field is hard, or impossible, to measure when it is overlaid by a large motion. LÄS MER

  3. 3. Partially Coherent Laser Radiation - Modeling and Application to Optical Microlithography

    Författare :Christer Rydberg; Chalmers University of Technology; []
    Nyckelord :microlithography; coherence; temporal speckle; partial coherence; optical propagation; number of degrees of freedom; dynamic speckle;

    Sammanfattning : This work deals with a type of light that has properties somewhere between blackbody radiation and conventional laser light; such light is referred to as partially coherent. One example is the radiation from the pulsed excimer laser, which is used in the manufacturing of most of the worlds integrated circuits. LÄS MER

  4. 4. Image Analysis and Enhancement with Applications in Medicine

    Författare :Lars Floreby; Institutionen för elektro- och informationsteknik; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Zubal; segmentation; Compton; SPECT; morphological; enhancement; multiscale; dynamic programming; motion estimation; optical flow; echocardiography; speckle; Image analysis; ultrasound; Signalbehandling; Signal processing; Fourier surface.;

    Sammanfattning : This thesis consists of six parts in which methods for image analysis and processing are studied. Two-dimensional medical images, image sequences, and three-dimensional image volumes are considered. LÄS MER

  5. 5. On perfusion estimation using ultrasound

    Författare :Tomas Jansson; Avdelningen för Biomedicinsk teknik; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Instrumentation technology; Speckle; Artifacts; Perfusion; Ultrasound; Doppler; Mät- och instrumenteringsteknik;

    Sammanfattning : This thesis has the main focus on ways to improve the blood perfusion estimate, as obtained from a continuous wave Doppler system. Earlier studies have shown large temporal variations in the detected perfusion estimate, due to speckle. LÄS MER