Computer Science Thesis in

DIGITAL IMAGE PROCESSINGby SiliconMentor

www.siliconmentor.comPhone: 0120-4293554, +91-7827766551

Track to Talk …..

Introduction Image Processing Digital Image Processing Examples ConclusionResearch Areas in Image

Processing

Introduction …

What Actually an IMAGE is ??• An image is the two dimensional (2-D) picture that gives appearance

to a subject usually a physical object or a person.

Standard Image of ‘Einstein’

The size of the row (M) and column (N) gives the size (or resolution) of M*N image. A small block ( 8 * 8 ) of the image is indicated at the right corner in the form of matrix. Each element in the matrix represents the dots of the image. Each dot represents the pixel value at that position.

Digital Image Processing…

• Digital Image processing is processing of images using mathematical operations.

• It is a subfield of signals and systems but focus particularly on images.• For which the input is an image, such as a photograph or video frame and the

output of image processing may be either an image or a set of characteristics or parameters related to the image ,using efficient algorithms.

• In digital Image processing operation typically defines a new image g in terms of an existing image f.

• We can transform either the range of f. Or the domain of f:

• The most common example is Adobe Photoshop. It is one of the widely used application for processing digital images.

Digital Image Processing …

• Digitization implies that a digital image is an approximation of a real scene

Examples: Image Enhancement

Examples: Artistic Effects Artistic effects are used to make images more visually appealing, to

add special effects and to make composite images

Examples: MedicineTake slice from MRI scan of canine heart, and find boundaries between types of tissue.

◦ Image with gray levels representing tissue density◦ Use a suitable filter to highlight edges

Original MRI Image of a Dog Heart Edge Detection Image

Examples: GIS Geographic Information Systems

◦ Digital image processing techniques are used extensively to manipulate satellite imagery

◦ Terrain classification◦ Meteorology

Examples: Law EnforcementImage processing techniques are used extensively by law enforcers

◦ Number plate recognition for speed cameras/automated toll systems

◦ Fingerprint recognition◦ Enhancement of CCTV images

Examples: HCITry to make human computer interfaces more natural

◦ Face recognition◦ Gesture recognition

Conclusion

Image Acquisition

Image Restoration

Morphological Processing

Segmentation

Representation &

Description

Image Enhancemen

t

Object Recognition

Problem DomainColour Image

ProcessingImage

Compression

Digital image processing deals with developing a digital system that performs operations on an digital image.

Research Areas in Image Processing Image Enhancement Image Defogging Image Registration Image Fusion Image Compression/Decompression Image Classification Image Steganography Image Watermarking Image Colorization

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