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 | 1 | initial version |
The difference between a LBP and a LBPH is that a LBP refers to the specific binary code that you get from using the LBP operator on a given pixel in a grayscale image, while the LBPH is a histogram representing the number of occurances for each binary code for a given image patch. The basic LBP operator works as follows:
For a given pixel p of a binary image patch check the n pixels in a radius r around p in a clockwise or counter-clockwise manner. If a pixel around p has a higher intensity than p that pixel is denoted as a 1, if not a 0. For a pixel p with n = 8 and r = 1 this results in a 8 bit binary code (LBP), for example 1001011. This code is then translated to a decimal value, which gets assigned to p. This is then done for the whole image patch and the occurance of each decimal value is counted. The number of occurances result in the LBPH.
Hope this helps to clarify the issue :)
| | 2 | No.2 Revision |
The difference between a LBP and a LBPH is that a LBP refers to the specific binary code that you get from using the LBP operator on a given pixel in a grayscale image, while the LBPH is a histogram representing the number of occurances for each binary code for a given image patch. The basic LBP operator works as follows:
For a given pixel p of a binary image patch check the n pixels in a radius r around p in a clockwise or counter-clockwise manner. If a pixel around p has a higher intensity than p that pixel is denoted as a 1, if not a 0. For a pixel p with n = 8 and r = 1 this results in a 8 bit binary code (LBP), for example 1001011. 10101011. This code is then translated to a decimal value, which gets assigned to p. This is then done for the whole image patch and the occurance of each decimal value is counted. The number of occurances result in the LBPH.
Hope this helps to clarify the issue :)
| | 3 | No.3 Revision |
The difference between a LBP and a LBPH is that a LBP refers to the specific binary code that you get from using the LBP operator on a given pixel in a grayscale image, while the LBPH is a histogram representing the number of occurances for each binary code for a given image patch. The basic LBP operator works as follows:
For a given pixel p of a binary image patch check the n pixels in a radius r around p in a clockwise or counter-clockwise manner. If a pixel around p has a higher intensity than p that pixel is denoted as a 1, if not a 0. For a pixel p with n = 8 and r = 1 this results in a 8 bit binary code (LBP), for example 10101011. This code is then translated to a decimal value, 171 in our example, which gets assigned to p. This is then done for the whole image patch and the occurance of each decimal value is counted. The number of occurances result in the LBPH.
Hope this helps to clarify the issue :)
