Task 1: Create an m-file that do the following: 1. Create an image of size 100 x 100 that contains your name in paint program and save it as 'watermark.png'. Figure 1 X Eile Edit Viev Inser Tool Desktc Windo Help Dis Huda 2. Read 'watermark.png' image in Matlab and display it. 3. Convert 'watermark.png' image into binary using function im2bw. 4. Read a 'cameraman.tif" image. 5. Save the binary image into the Least Significant bit (LSB) of cameraman image randomly using the randi function as the following example: randi(M) that return one value from 1 to M. Store the modified image in a new image. Old version of matlab: ceil(rand*256); 6. Save the binary image into the Most Significant bit (MSB) of img randomly using the randi function. 7. Display the original image with the two watermarked images.

Task 1: Create an m-file that do the following: 1. Create an image of size 100 x 100 that contains your name in paint program and save it as 'watermark.png'. Figure 1 X Eile Edit Viev Inser Tool Desktc Windo Help Dis Huda 2. Read 'watermark.png' image in Matlab and display it. 3. Convert 'watermark.png' image into binary using function im2bw. 4. Read a 'cameraman.tif" image. 5. Save the binary image into the Least Significant bit (LSB) of cameraman image randomly using the randi function as the following example: randi(M) that return one value from 1 to M. Store the modified image in a new image. Old version of matlab: ceil(rand*256); 6. Save the binary image into the Most Significant bit (MSB) of img randomly using the randi function. 7. Display the original image with the two watermarked images.

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Question

Task 1: Create an m-file that do the following:
1. Create an image of size 100 x 100 that contains your name in paint program and save it as
'watermark.png'.
Figure 1
X
Eile Edit Viev Inser Tool Desktc Windo Help
C
2. Read 'watermark.png' image in Matlab and display it.
3. Convert 'watermark.png' image into binary using function im2bw.
4. Read a 'cameraman.tif' image.
5.
Huda
Save the binary image into the Least Significant bit (LSB) of cameraman image randomly
using the randi function as the following example:
randi(M) that return one value from 1 to M.
Store the modified image in a new image.
Old version of matlab: ceil(rand*256);
6. Save the binary image into the Most Significant bit (MSB) of img randomly using the randi
function.
7. Display the original image with the two watermarked images.
Task 2:
1. Read the 'watermark.png' image created in Task 1 that has your name.
2. Create OR and AND masks image (type : uint8) that have the same size of watermark.png'.
3. Use [x,y] = ginput(2) to get the coordinate of any character from your name using the mouse
cursor.
1. Fill the masks with the appropriate values to display the chosen character in the previous
step.
2. Apply AND and OR operations between the original image and the mask.

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Step 1: Given Scenario-Image Watermarking for Secure Transmission

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Step 2: 1. Creating a Personalized Watermark with Microsoft Paint

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Step 3: Algorithm as per the sceanrio mentioned:

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Step 4: Matlab script:

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