This paper proposes a general intelligent video surveillance monitoring system to explore and examine some problems in animal behavior analysis particularly in cow behaviors.
August 20, Last Updated: This is our another ongoing series of packet sniffer tool called tcpdump. Here, we are going to show you how to install tcpdump and then we discuss and cover some useful commands with their practical examples.
It saves the file in a pcap format, that can be viewed by tcpdump command or a open source GUI based tool called Wireshark Network Protocol Analyzier that reads tcpdump pcap format files.
Capture Packets from Specific Interface The command screen will scroll up until you interrupt and when we execute tcpdump command it will captures from all the interfaces, however with -i switch only capture from desire interface.
Capture Only N Number of Packets When you run tcpdump command it will capture all the packets for specified interface, until you Hit cancel button.
But using -c option, you can capture specified number of packets. The below example will only capture 6 packets. Session Message 6 packets captured 23 packets received by filter 0 packets dropped by kernel 3.
It is a character-encoding scheme format.
Display Available Interfaces To list number of available interfaces on the system, run the following command with -D option. Capture and Save Packets in a File As we said, that tcpdump has a feature to capture and save the file in a.
Read Captured Packets File To read and analyze captured packet Capture IP address Packets To capture packets for a specific interface, run the following command with option -n. Capture only TCP Packets.
To capture packets based on TCP port, run the following command with option tcp. There are number of options available, you can use the options as per your requirement. Please share if you find this article useful through our comment box.In this story, we will learn some image processing concepts and how to hide an image inside another image file.
To provide a functional example, it was implemented a Python class to perform the procedures mentioned in the end of this story..
First of all, let’s understand what is steganography, digital images, pixels, and color models. The first recorded uses of steganography can be traced back to BC when Herodotus mentions two examples in his Histories.
Histiaeus sent a message to his vassal, Aristagoras, by shaving the head of his most trusted servant, "marking" the message onto his scalp, then sending him on his way once his hair had regrown, with the instruction, .
Carrier Steganography. Steganography is the science of writing hidden messages in such a way that no one apart from the sender and intended recipient even realizes there is a hidden message. Caesar Cipher History. The Roman ruler Julius Caesar ( B.C.
– 44 B.C.) used a very simple cipher for secret communication. He substituted each letter of the alphabet with a letter three positions further along. Examples of steganography in a Sentence Recent Examples on the Web Mallory explained in interviews with the CIA and FBI that were played in court on Thursday that the phone contained an app designed to facilitate steganography, or the hiding of information inside of an image.
IEEE Digital Image Processing projects for arteensevilla.com, arteensevilla.com, BE, MS, MCA, Students.
Image Processing or Digital Image Processing is technique to improve image quality by applying mathematical operations.