MC0086- DIGITAL IMAGE PROCESSING

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ASSIGNMENT

DRIVE	FALL – 2016
PROGRAM	MCA(REVISED FALL 2007)
SEMESTER	6
SUBJECT CODE & NAME	MC0086- DIGITAL IMAGE PROCESSING
BK ID	B1007
CREDITS	4
MARKS	60

Note: Answer all questions. Kindly note that answers for 10 marks questions should be approximately of 400 words. Each question is followed by evaluation scheme.

Question. 1. Write short notes on:

a) Imaging in the Microwave Band

Answer: Microwave imaging is a science which has been evolved from older detecting/locating techniques (e.g., radar) in order to evaluate hidden or embedded objects in a structure (or media)using electromagnetic (EM) waves in microwave regime (i.e., ~300 MHz-300 GHz). Microwave imaging techniques can be classified as either quantitative or qualitative. Quantitative imaging techniques (are also known as inverse

b) Imaging in the Radio Band

Answer: The production of a visible image of an object by means of radio waves. It is used to study the internal structure of objects that are opaque to waves in the optical region and to observe objects that are located in an optically opaque medium. Since the radio waves usually employed in radio imaging are in the millimeter and

Question. 2. Explain the properties and uses of electromagnetic spectrum.

Answer: The electromagnetic spectrum is the collective term for all known frequencies and their linked wavelengths of the known photons ( electromagnetic radiation ). The "electromagnetic spectrum" of an object has a different meaning, and is instead the characteristic distribution of electromagnetic radiation emitted or absorbed by that particular object.

The electromagnetic spectrum extends from

Question. 3. Differentiate between Monochromatic photography and Color photography

Answer:

Color film contains several layers, each sensitive to a different color of light (red, green, blue). When exposed to light and developed, these produce magenta, cyan and yellow colors in the negative. The printing process works in a similar way. This is similar to the way digital sensors work, in that there are filters to exclude all but one color of light, so

Question. 4. Define and explain Dilation and Erosion concept.

Answer: Morphology is a broad set of image processing operations that process images based on shapes. Morphological operations apply a structuring element to an input image, creating an output image of the same size. In a morphological operation, the value of each pixel in the output image is based on a comparison of the corresponding pixel in the input image with its neighbors. By choosing the size and shape of the neighborhood, you can construct a morphological operation that is sensitive to specific shapes in the input image

Question. 5. What is mean by Image Feature Evaluation? Which are the two quantitative approaches used for the evaluation of image features?

Answer: Image Feature Evaluation and Contents-based Image Retrieval In contrast with other studies elsewhere in the literature, here we compare the performance of local descriptors for purposes of contents-based image retrieval. Rather than evaluating the capabilities of the image features to describe the scene subject to affine transformations, we focus on the adequacy of the local descriptors for contentsbased image retrieval

Question. 6. Explain about the Region Splitting and merging with example.

Answer: Splitting and merging attempts to divide an image into uniform regions. The basic representational structure is pyramidal, i.e. a square region of size m by m at one level of a pyramid has 4 sub-regions of size by below it in the pyramid. Usually the algorithm starts from the initial assumption that the entire image is a single region, then computes the homogeneity criterion to see if it is TRUE. If FALSE, then the square region is split into the four smaller regions. This process is then repeated on each of the sub-regions until no further splitting is necessary. These small square regions are then merged if they are similar to give larger irregular regions. The problem (at least from a programming point of view) is that any two Dear students get fully solved assignments

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