Computational Analysis of the Human Eye with Applications - download pdf or read online

By Sumeet Dua

ISBN-10: 9814340294

ISBN-13: 9789814340298

Advances in semi-automated high-throughput photograph info assortment workouts, coupled with a decline in garage expenses and a rise in high-performance computing options have ended in an exponential surge in facts accumulated by way of biomedical scientists and scientific practitioners. analyzing this uncooked facts is a tough activity, and nowhere is that this extra glaring than within the box of opthalmology. The sheer pace at which information on cataracts, diabetic retinopathy, glaucoma and different eye problems are accumulated, makes it most unlikely for the human observer to at once computer screen sophisticated, but serious info.

This e-book is a unique and well-timed exercise to give, in an amalgamated structure, computational photo modeling tools as utilized to varied extrinsic clinical difficulties in ophthalmology. it truly is self-contained and provides a hugely finished array of photo modeling algorithms and methodologies suitable to ophthalmologic difficulties. The publication is the 1st of its sort, bringing eye imaging and multi-dimensional hyperspectral imaging and knowledge fusion of the human eye, into concentration.

The editors are on the best in their fields and convey a robust multidisciplinary synergy to this visionary quantity. Their ''inverted-pyramid'' method in providing the content material, and concentrate on center purposes, will attract scholars and practitioners within the box

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Extra info for Computational Analysis of the Human Eye with Applications

Sample text

We can also think of these intensities as magnitudes at a particular location (Fig. 1), to visualize many of the computational methods discussed in this chapter more easily. As shown in Fig. 1, the green channel (G) will contain most of the interesting contrast in retinal images; thus, it will be used frequently in the following sections as the representation of the image, f . For clarity, this chapter is divided into three sections: in Sec. 2, we describe preprocessing methods; in Sec. 3, we explain segmentation/ localization, and in Sec.

The activated transducin protein in turn activates an enzyme that breaks down cGMP and prevents its activation of cGMP-gated Na+ , Ca++ channels. This complicated sequence has the advantage of enhancing the sensitivity of photon detection by an amplification process. Absorption of a single photon can cause closure of a considerable percentage of the channels in a rod membrane. 21 Other mechanisms act as molecular brakes and restore the rhodopsin to its initial state to start the photoreceptor cascade over.

J Physiol 108:315–339, 1949. 16. J. D. Mechanism of nerve-impulse transmission at a crayfish synapse. Nature 180:342–343, 1957. 17. L. Connexins, connexons and intracellular communication. Ann Rev Biochem 65:475–502, 1996. 18. C. G. Retina. In: John J. ), Biochemistry of the Eye, Chapman and Hall, London, 1997. 19. L. A. How photoreceptor cells respond to light. Sci Amer 256:40–47, 1987. 20. Stryer, L. Cyclic GMP cascade of vision. Ann Rev Neurosci 9:87–119, 1986. 21. H. Energy at the threshold of vision.

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Computational Analysis of the Human Eye with Applications by Sumeet Dua


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