WHAT IS MULTI-BLOCK LBP?

Multi-Block LBP is used to encode the rectangular region’s intensity by using local binary patterns. Local Binary Pattern (LBP) looks at nine pixels at a time (i.e., 3x3 window of image = 9-pixel values and 2^9 = 512 possible values). By using Local Binary Pattern we can turn this 3x3 matrix into a single value. LBP focus on the very local neighborhood like 3x3. Multi-block LBP has been used for larger-scale structures. With the help of Multi-Block Local Binary Pattern (MB-LBP), 256 types of different binary patterns can be formed for edge detection and face detection from still images.

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The computation of the local binary pattern on the 3x3 matrix is shown in Figure.

I used MB-LBP For Face Detection.

Local Binary Patterns (LBPs) have been used for a wide range of applications Face detection Face recognition Facial expression recognition Remote sensing Texture classification Object detection systems