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## Thursday 27 June 2013

### GROUP DISCUSSION - TECHNIQUES & TIPS

GROUP DISCUSSION

A GD is a methodology used by an organization to guage whether the candidate has certain personality traits and/or skills that it desires in its members. It is used to evaluate the factors such as,

## Wednesday 26 June 2013

### IMAGE FILE TO TEXT FILE CONVERSION MATLAB – TEXT FILE TO IMAGE FILE CONVERSION MATLAB EXAMPLE

Here is an example to convert an image into a text file in matlab, for processing in HDL (verilog) or in someother tool. Also the text file is further converted into image file.

An image is a 2D matrix. For converting into text file, it needs to be converted into 1D matrix and then to text file using file write in matlab. The image size is also a constraint, so it needs to be fixed for conversion. Then converted to 1D matrix using reshape command. Then write into text file.

B=rgb2gray(A);
%figure,imshow(B),title('org');

C=imresize(B,[isize isize]);
figure,imshow(C),title('croped');
d=reshape(C,1,[]);
disp('Reshapping done');
fid = fopen('img.txt', 'wt');
fprintf(fid, '%8d\n', d);
disp('Text file write done');disp(‘ ‘);
fclose(fid);

For converting text file into image, it needs to be converted from 1D matrix and then to image. The image size must same as previous for processing text into image. Then converted to 1D matrix using reshape command. Then write into text file.

·         First, the text file is read using file read  as vector (1D matrix).
·         Then it has to be converted to matrix.
·         Finally transpose to complete it as image.

fidh = fopen('img.txt');
Ah = fscanf(fidh, '%g %g', [1 inf]);
fclose(fidh);
S1h= vec2mat(Ah,isize,isize);
disp('Vector conversion done');
%c=imresize(S1,[128 128]);
Sh= transpose(S1h);
Jh=uint8(Sh);
imwrite(Jh,['newimage','.jpg']);
figure,imshow(Jh),title('IMAGE form TEXT file');

OUTPUT:

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## Tuesday 11 June 2013

### QUALITIES AND PERSONALITIES FOR GOOD PERSON & SOME EMPLOYEE AND GET HIRED

QUALITIES FOR GOOD PERSON & SOME EMPLOYEE

• SOCIABLE NATURE
• EASYGOING AND CAREFREE NATURED PERSONALITIES
• BALANCED PSYCHE
• ENTHUSIASTIC PERSONALITIES
• SERIOUS PERSONALITIES

## Monday 10 June 2013

### INTERFACING MULTIPLE TEMPERATURE SENSORS TO AVR – LM35 ATMEGA8

Here is a simple example to interface multiple temperature sensors to AVR (Atmega8) microcontroller.  Atmega8 is a High-performance, Low-power Atmel®AVR® 8-bit Microcontroller Advanced RISC Architecture with 8KB ISP flash, 1KB RAM, 512B EEPROM, Two 8-bit Timer/Counters with Separate Prescaler, one Compare Mode, One 16-bit Timer/Counter with Separate Prescaler, Compare Mode, and Capture Mode, Real Time Counter with Separate Oscillator, Three PWM Channels, 6 multiplexed ADC channels with 10-bit resolution. We have used 2 channels to connect 2 LM35 linear temperature sensors to it.

## Thursday 6 June 2013

### MATLAB FILE IO - Syntax - Example Read Write

This is a simple example for accessing text files in MATLAB. It is always a trouble to process a signal or image in HDL directly. Using this we can convert a signal or an image into a text file and can be used to process in HDL (verilog, VHDL), etc.
First the required commands for file io are described, followed by the code example for a sine wave write and read.