Dip 1 introduction
-
Upload
manas-mantri -
Category
Engineering
-
view
61 -
download
5
description
Transcript of Dip 1 introduction
Manas Ranjan Mantri ([email protected])
DIGITAL IMAGE PROCESSING
INTRODUCTION
Processing of Images which are Digital in nature by means of Digital Computer
ECEDEPARTMENT
Digital Image Processing
Why do we need Digital Image Processing?
Improvement of pictorial information for human perception
Efficient storage and transmission Image processing for autonomous
application
CENTURION INSTITUTE OF TECHNOLOGY, JATNI 2
ECEDEPARTMENT
Human PerceptionImage processing employ methods capable of enhancing pictorial information for human interpretation and analysis.
Typical applications:
Noise filtering Contrast enhancement De-blurring
CENTURION INSTITUTE OF TECHNOLOGY, JATNI 3
ECEDEPARTMENT
CENTURION INSTITUTE OF TECHNOLOGY, JATNI 4
ECEDEPARTMENT
Noisy Image
Filtered Image
Image Enhancement
Image Enhancement
CENTURION INSTITUTE OF TECHNOLOGY, JATNI 5
ECEDEPARTMENT
Low contrast Image
Enhanced Image
Image Enhancement
CENTURION INSTITUTE OF TECHNOLOGY, JATNI 6
ECEDEPARTMENT
Enhanced Image
Darker Image
Image Enhancement
CENTURION INSTITUTE OF TECHNOLOGY, JATNI 7
ECEDEPARTMENT
Enhanced Image
Brighter Image
CENTURION INSTITUTE OF TECHNOLOGY, JATNI 8
ECEDEPARTMENT
Image Enhancement
Blurred Image
Deblurred Image
CENTURION INSTITUTE OF TECHNOLOGY, JATNI 9
ECEDEPARTMENT
Image Enhancement
Blurred Image
Deblurred Image
Medical Imaging
CENTURION INSTITUTE OF TECHNOLOGY, JATNI 10
ECEDEPARTMENT
Original Image
Enhanced Image
Machine Vision Application
Here we extract information which are suitable for computer processing.
Typical application: For product assembly and inspection Automated target detection and
tracking Finger print recognition Aerial and satellite imagery for
weather predictionCENTURION INSTITUTE OF TECHNOLOGY, JATNI 11
ECEDEPARTMENT
Automated Inspection
CENTURION INSTITUTE OF TECHNOLOGY, JATNI 12
ECEDEPARTMENT
Bottling plant automation
CENTURION INSTITUTE OF TECHNOLOGY, JATNI 13
ECEDEPARTMENT
Automated Inspection
Damaged Integrated Circuit
CENTURION INSTITUTE OF TECHNOLOGY, JATNI 14
Weather forecasting ECEDEPARTMENT
Image of Hurricane
CENTURION INSTITUTE OF TECHNOLOGY, JATNI 15
Radar ImagingECEDEPARTMENT
Image of Mountain
Steps in Digital Image Processing
CENTURION INSTITUTE OF TECHNOLOGY, JATNI 16
ECEDEPARTMENT
Image Acquisition
CENTURION INSTITUTE OF TECHNOLOGY, JATNI 17
ECEDEPARTMENT
Imaging sensor & capability to digitize the signal collected by the sensor
Video camera Digital camera Conventional camera & analog-to- digital converter
Preprocessing
To improve the image to ensure the success of further processes
e.g. Enhancing contrastRemoving noise Identifying information-rich areas
CENTURION INSTITUTE OF TECHNOLOGY, JATNI 18
ECEDEPARTMENT
Segmentation
To partition the image into its constituent parts (objects)
Raw data, depicting either boundaries or whole regions (corners vs. texture for example)
Need conversion to a form suitable for computer processing
CENTURION INSTITUTE OF TECHNOLOGY, JATNI 19
ECEDEPARTMENT
Representation & Description
Feature selection (description) deals with extracting:
Features that result in quantitative information of interest
Features that are important for differentiating one class of objects from another
CENTURION INSTITUTE OF TECHNOLOGY, JATNI 20
ECEDEPARTMENT
Recognition & Interpretation
To assign a label to an object based on information provided by the descriptors
To assign meaning to a group of recognized objects
CENTURION INSTITUTE OF TECHNOLOGY, JATNI 21
ECEDEPARTMENT
Knowledge Base
Knowledge database Guides the operation of each
processing module and controls the interaction between modules
CENTURION INSTITUTE OF TECHNOLOGY, JATNI 22
ECEDEPARTMENT
Different Components
CENTURION INSTITUTE OF TECHNOLOGY, JATNI 23
ECEDEPARTMENT
Questions???????
1. Define Digital Image Processing.2. What is the need of Digital Image
Processing?3. What are the various fields that use digital
image processing ?4. What are the fundamental steps in digital
image processing?5. What are the components of Image
processing system?
CENTURION INSTITUTE OF TECHNOLOGY, JATNI 24
ECEDEPARTMENT