IMAGE PROCESSING IN CHEMISTRY Wesley Rhodes Nicole Tipton

IMAGE PROCESSING IN CHEMISTRY Wesley Rhodes & Nicole Tipton Academy of Science Summer Bridge Program First Year Seminar - Summer 2012

IMAGE PROCESSING IN CHEMISTRY • The study of any algorithm that takes an image as input and returns an image as output. • Includes feature detection and image display • The image shows composition, structure, and dynamics of the chemical sample.

APPLICATIONS OF IMAGE PROCESSING • Medical diagnosis from an image • Magnetic Resonance Imaging (MRI) • Positron Emission Tomography (PET) • Image segmentation: partitions digital image into segments • Textural Analysis

MAGNETIC RESONANCE IMAGING (MRI) • Using MRI images, doctors can visualize the organs or structures of the human body and determine whethere is any abnormality.

MRI CONTINUED • MRI scanner creates a superconducting field around the patient that lines up the hydrogen protons in the body. • A resonance scan is directed at the stationary hydrogen protons. • Unpaired hydrogen protons absorb the RF scan and emit signals back to the coil that is sending the RF signal. • Signals are digitized and turned into images

POSITRON EMISSION TOMOGRAPHY (PET) • PET images provide three dimensional images of organs or tissues and display their health status.

TEXTURE ANALYSIS • Used to find partitions of the image pixels to form coherent image properties such as: • brightness, color, and texture.

TEXTURE ANALYSIS: EXAMPLE • Extracts texture features and derives an image coding scheme for presenting selected features • Used to examine characteristics of plastic particles in plankton samples collected routinely in Northeast Pacific ecosystems

ACKNOWLEDGEMENTS • Dr. Tashakkori • Dr. Burris • Dr. Kurtz • Dr. Schwab • Appalachian State Summer Bridge Program • National Science Foundation

WORKS CITED • Coyne, K. (n. d. ). MRI: A Guided Tour. magnet. fsu. edu. Retrieved from http: //www. magnet. fsu. edu/education/tutorials/magnetacademy/mri/ • PET Scan. (n. d. ). jfkmc. org. Retrieved from http: //jfkmc. org/pet-scan • Kucheryavski, S. (n. d. ). Extracting useful information from images. sciencedirect. com. Retrieved from http: //www. sciencedirect. com/science/article/pii/S 0169743910002297 • West (n. d. ). Metabolic Imaging: How PET Scans Are Changing Oncology. cancergrace. org. Retrieved from http: //cancergrace. org/cancer 101/2007/01/09/pet-scanning-intro/ • PET Scan. (n. d. ). my. clevelandclinic. org. Retrieved from http: //my. clevelandclinic. org/services/pet_scan/hic_pet_scan. aspx • Positron Emission Tomography (PET). (n. d. ). neurocog. psy. tufts. edu. Retrieved from http: //neurocog. psy. tufts. edu/images/positron_emission_tomography. htm • Doyle, M. J. , Watson, W. , Bowlin, N. M. , & Sheavly, S. B. (n. d. ). Plastic particles in coastal pelagic ecosystems of the Northeast Pacific ocean. www. elsevier. com/locate/marenvrev. Retrieved from http: //www. pmel. noaa. gov/foci/publications/2011/doyl 0755. pdf