CH-3 – Image Analysis – Part-3

Important Note: This article is part of the series in which discuss theory of Video Stream Matching. – Parametric Data and Non Parametric Data

There is data which shows the same distribution and has distribution called parametric data. In this type of data, distance form mean on either side remain same. But in non-parametric data distance from mean is not same. It is data which has no specific distribution. Simply this type is called distribution free data. [25, 26, 27]

This mean frame histogram data is non parametric data so that is why using in it KS Test.

3.3 – Features Extraction

There are four types of features selected for this system.[6]

  1. Histogram
  2. Edge
  3. Slope
  4. Wavelets

Now these features will discuss one by one below.

3.3.1 – Histogram Feature Extraction

Method of Histogram feature extraction is same as above for Mean Frame. Same formulas are used in it. It provide additional information after calculating histogram tile by tile number of tiles and also number of bins per window smaller size of bins more elements in feature Sub-Vector.[6]

After calculating the result, data arrange in column form means number of Tiles and number of columns are same.

W1 W2 W3 W4

1 2 3 4

2 3 1 2

3 4 2 1

4 1 4 3

So above data shows how data arrange from W1 to W4. Also shows the number of Tiles are 4 and below it shows that Bins are 4 and each window has four elements.

Here one problem lies. Even values in each window are same and they have different distribution. But if calculate there mean then outcome is same values.

Mean of W1 W2 W3 W4

Mean = 2.5 2.5 2.5 2.5

So to solve this problem, values of each window is multiplying with a column vector which contains the values from 1 to number of bins. For example if Number of Bins are 4 then column vector consist on.


Now with each window matrix multiplying with this matrix this process is called weighting the matrix.

CM W1 ResW1

1 1 1

2 X 2 = 4

3 3 9

4 4 16

CM w2 ResW2

1 2 2

2 X 3 = 6

3 4 12

4 1 4

Mean of ResW1 ResW2

Mean= 7.5 6

Now this process make able to system to get different results. It is very unique that system got same results. If this may happen in data any where then it has solution that instead of using mean use variance of data.

According to experiments the pair of mean values and variance values is not same.

For example

W1 W2 W3 W4

2 4 4 2

4 2 6 6

6 6 2 4

Now multiplying W1, W2, W3, W4 with Mat



Then resultant matrixes are.


2 4 4 2

8 4 12 12

8 18 6 12

Now mean and variance of above matrixes are,


Mean = 9.33 8.66 7.33 8.66

Variance = 65.33 65.33 17.33 33.33

Here getting information that pair of Mean and Variance is not same. So this result is further used for better decision making.

Ali Imran
Over the past 20+ years, I have been working as a software engineer, architect, and programmer, creating, designing, and programming various applications. My main focus has always been to achieve business goals and transform business ideas into digital reality. I have successfully solved numerous business problems and increased productivity for small businesses as well as enterprise corporations through the solutions that I created. My strong technical background and ability to work effectively in team environments make me a valuable asset to any organization.

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