Essays about: "Non-linear imaging"

Showing result 1 - 5 of 15 essays containing the words Non-linear imaging.

  1. 1. Thermographic Measurements of Hot Materials Using a Low- to High-speed RGB-camera : Prospect of RGB-cameras Within the Field of Thermographic Measurements

    University essay from Luleå tekniska universitet/Rymdteknik

    Author : Therese Berndtsson; [2019]
    Keywords : RGB-camera; thermographic measurements; calibration; temperature transform; thermal behavior; dual-wavelenght;

    Abstract : Monitoring the thermal behavior of material while heated or cooled is of great importance in order to understand the structural behavior of materials. This thesis aims to investigate the prospects for imaging hot materials using an RGB-camera. READ MORE

  2. 2. Deep learning approach to hologram based cellular classification

    University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Author : Robin Maillot; [2018]
    Keywords : ;

    Abstract : With the rise of data intensive classification algorithms the need for high throughput imagery methods has increased. Lens-free imagery provides a new high throughput technique for imaging cells through hologram measurements. READ MORE

  3. 3. Assessment of image quality in x-ray fluoroscopy based on Model observers as an objective measure for quality control and image optimization

    University essay from Stockholms universitet/Fysikum

    Author : Henrik Elgström; [2018]
    Keywords : image quality; fluoroscopy; Model observer;

    Abstract : BACKGROUND: Although the Image Quality (IQ) indices calculated by objective Model observers contains more favourable characteristics compared to Figure Of Merits (FOM) derived from the more common subjective evaluations of modern digital diagnostic fluoroscopy units, like CDRAD or the Leeds test-objects, practical issues in form of limited access to unprocessed raw data and intricate laboratory measurements have made the conventional computational methods too inefficient and laborious. One approach of the Statistical Decision Variables (CDV) analysis, made available in the FluoroQuality software, overcome these limitations by calculating the SNR2rate from information entirely based on image frames directly obtained from the imaging system, operating in its usual clinical mode. READ MORE

  4. 4. Ultraharmonic Imaging of Polymer-shelled Microbubbles

    University essay from KTH/Skolan för kemi, bioteknologi och hälsa (CBH)

    Author : Dimitrios Evangelou; [2018]
    Keywords : Subharmonic Imaging; Ultraharmonic Imaging; Polyvinyl Alcohol; PVA; Verasonics; Ultrasound Contrast Agents; Non-linear imaging; Contrast-to-Tissue ratio.;

    Abstract : Ultrasound has been established as one of the most widely used imaging modalities for diagnostic purposes, due to the several advantages it provides in comparison with other techniques. Hence, ways to further improve the confidence in diagnoses provided by ultrasound are constantly being investigated. READ MORE

  5. 5. Automatic Tissue Segmentation of Volumetric CT Data of the Pelvic Region

    University essay from Linköpings universitet/Medicinsk informatik

    Author : Julius Jeuthe; [2017]
    Keywords : Image segmentation; Computed tomography; Pelvic region; Threshold segmentation; Region growing; Histogram matching; Atlas segmentation; Morphon;

    Abstract : Automatic segmentation of human organs allows more accurate calculation of organ doses in radiationtreatment planning, as it adds prior information about the material composition of imaged tissues. For instance, the separation of tissues into bone, adipose tissue and remaining soft tissues allows to use tabulated material compositions of those tissues. READ MORE