waveform coding

Discussion in 'Programmer's Corner' started by xtrail, Apr 26, 2012.

  1. xtrail

    Thread Starter New Member

    May 19, 2011
    hi to everyone,
    am a student at university of nairobi,i need help on the following
    1. a program that subtracts the original image from the delta modulation coded image,enabling me to evaluate the signal to coding noise ratio

    2.a program that estimates the maximum magnitude error of the delta modulation code image signal

    3.a program to adaptively adjust the step size of delta modulation scheme
  2. WBahn


    Mar 31, 2012
    1) What is the general approach that you think should be take to solve each?

    2) What have you done on these problems to date?

    3) What, specifically, are you having difficulties with on each?
  3. xtrail

    Thread Starter New Member

    May 19, 2011
    i think this should be the approach,say you are given a 128X128 pixel image as an input to the delta modulation system(in this case programmed using matlab or c) and the output of this system is step waveform that represents the original image.
    Then code this waveform with 1's and 0's
    Output the DM coded image then write a code to subtract it from the original image.
    i have used digital image processing by gonzalez and digital signal procesing using matlb by vinay,but my difficulty come in writing algorithm/programs to implement these scheme so you can open my eyes on this.thank you