Nov 29
Working with colors is the most interesting and exciting thing that keeps on fascinating me. I am writing this post to convey some basic ideas that I know about colors. Colors are one among several features that makes life interesting. From my kids age colors fascinated me and I always wanted to work in fields that deal with colors. To start working with colors you must know certain basic details like how the computer or any equipment displays the color? And how they take the color as? As you all know computer deals with only machine language which consist of zeros and ones. There are millions of colors available in this world. The most basic and primary colors are red, green and blue. RGB is known as primary colors because by mixing them in certain combinations you can get any other color you want to. In machine world we define 3 two dimensional matrix, each matrix represents the primary colors. When you take a picture it consist of several pixels and each pixel’s intensities are specified by the intensities of red green and blue matrix, therefore for each pixel RGB values are specified inside the red green and blue matrix. Usually we specify values in 8 bits which ranges from 0 to 255. By analyzing each and every bit you can do various operations and this is how you start your Image Processing. Hope you find this concept interesting, make use of it and enjoy working with colors.
Nov 22
When you work in a real time project, you will surely learn many small things. There are certain ideas which can be learnt only while working in real time projects. You start your project by simulating and you slowly move on to next stage that is converting your simulated output into a real time output which can be used as application. Let us take an example of image processing color detection, stream of video signals are received by the computer using some particular software, then you store a single frame by taking a snap shot of the incoming video signal. After performing all this you work with your stored image and you get perfect output, now when you run this program for a real time video signal using Matlab then you won’t get the desired output. You are using same camera and same software for processing. It is working with the stored image from that camera and not with stream of videos? Why is that so? These are the real time problems, when you deeply analyze you can find that, while you take the snap shot of the video and store the image, software which you use is actually performing certain conversions in your image and then storing it, therefore while you analyze using this you are getting perfect output. When you directly input video and take snap shots using Matlab, Matlab is not actually doing those conversions which that software does. This is the main problem and it can be rectified by writing that conversion code in Matlab. So, friend’s real time projects are exciting and challenging, try to take up those projects and learn many new things.
Nov 19
Replace excess power consuming transmitters and receivers with ZIGBEE transceivers, which has extended battery life up to 15 years, just 2 AA size batteries are enough. Information security is 100% guaranteed. Auto error detection and error correction mechanism, Safe and simpler operation are other features of ZIGBEE. Power consumption level of Bluetooth wireless LAN are greater hence a reduced battery life is obtained, use zigbee for low power consumption. Easy to carry and configure. Overhead information’s are greater in case of Bluetooth and other wireless devices, zigbee offers 250kbps data rate with very less overhead. Co-ordination between other nodes are also made simpler, safer and secure data transfer are its other significant features. It supports around 65000 nodes during co-ordination. It has a capability to transfer data of up to 100m and it can be extended up to 4km with the help of routers. The technology is mainly used in industrial automation, automatic meter reading, patient monitoring mechanisms and personal area networking..
Nov 09
It has been laid down that employment is necessary whereas education is looked at as the beginning of the road only. This is only true as long as the system functions. The moment it is upset like the economic crisis then we see the limitations of our system and we realize that it cannot guarantee certainty. What is one to do for certainty? You may have heard of the famous theory that nothing is certain in life except death and taxes. But think again. It is only when the existing system fails that we turn our heads round. What do we notice? We see that knowledge remains even when everything else becomes stagnant. Even if knowledge is difficult to acquire we can develop a lifelong relationship with any body of knowledge that interests us. Unemployment causes frustration and this is the right time to listen to your voice of intuition.
Nov 04
The only thing that cannot be transmitted over space is power. You don’t have a wireless battery in existence. You just have wireless device which operates on portable batteries. For any device to operate you need a power supply to power them. Power supplies can be wired or wireless. Wired supply means that the device is not movable example LAN line phones. Wireless refer that the device is portable example Cell phones. From this discussion it is clear that power supply is needed for both wired and wireless connections. It is not enough if you just provide power supplies to your circuits. You should provide power which feeds the system with right voltage and current. Excess of anything may damage your device and insufficient may lead to wrong operation. For example when you are doing a project on robot then providing right amount of voltage and current according to the weight you load ion the robot s very important. When the current needed for the circuit to perform perfectly is not supplied then motor s may not run even though they receives the signal. Therefore giving right amount of power is absolutely necessary to get the desired output.
Nov 03
Playing chess involves the exercise of the creative and logical faculties. The player strategizes moves by exercising creativity while calculating and planning are functions of reasoning. A game of no chance gives room for the heart as in life with the only difference being that there is nothing ever to lose in chess but only the game. Even if you have lost the game you have learnt to balance both the hemispheres of your brain. Apart from playing in competitions it opens the human mind to doors of possibilities. Critics feel that it favours the mind more than the heart but little do they understand the fact that the heart triggers a spark that drives you into making mind boggling moves. You will in all likelihood play life more tactfully after a game of chess. It is a game of possibilities and not so much of chance
