Patch-Based Background Initialization in Heavily Cluttered Video

A Novel 3-D Color Histogram Equalization MethodWith Uniform 1-D Gray Scale HistogramJi-Hee Han, Sejung Yang, and Byung-Uk Lee, Member, IEEE

IEEE TRANSACTIONS ON IMAGE PROCESSING, VOL. 20, NO. 2, FEBRUARY 2011OutlineINTRODUCTION

REVIEW OF PREVIOUS WORK BASED UPON THE 3-D COLOR HISTOGRAM

PROPOSED METHOD: A CDF WITH AN ISO-LUMINANCE-PLANE BOUNDARY

EXPERIMENTS

OutlineINTRODUCTION

REVIEW OF PREVIOUS WORK BASED UPON THE 3-D COLOR HISTOGRAM

PROPOSED METHOD: A CDF WITH AN ISO-LUMINANCE-PLANE BOUNDARY

EXPERIMENTS

INTRODUCTIONhistogram equalization has become embedded in most consumer digital cameras

The majority of color histogram equalization methods do not yield uniform histogram in gray scale

This paper proposes a novel 3-D color histogram equalization method that produces uniform distribution in gray scale histogramOutlineINTRODUCTION

REVIEW OF PREVIOUS WORK BASED UPON THE 3-D COLOR HISTOGRAM

PROPOSED METHOD: A CDF WITH AN ISO-LUMINANCE-PLANE BOUNDARY

EXPERIMENTS

REVIEW OF PREVIOUS WORKA. Gray Scale Histogram Equalization

The pdfs of them are denoted as , and the corresponding cdfs are ,and intensity of the original input image as modified intensity of the resulting output image asL is the number of intensity levels

REVIEW OF PREVIOUS WORKB. Previous Methods Based upon 3-D Color Histogram EqualizationTrahanias and Venetsanopoulos [2] defined the cdf in RGB color space as

REVIEW OF PREVIOUS WORKThe desired output cdf is given as:

REVIEW OF PREVIOUS WORKR, G, and B components are the same, i.e.,

The resulting cdf for this image is proportional to , i.e.,

REVIEW OF PREVIOUS WORK

REVIEW OF PREVIOUS WORK

REVIEW OF PREVIOUS WORKMenotti proposed to adopt an input cdf that multiplies each marginal cdf of three channels , i.e.,

REVIEW OF PREVIOUS WORKC. Generalization of Gray Scale Image Enhancement to Color Images

Naik and Murthy [21] proposed a scheme to generalize any gray scale image processing to color images

OutlineINTRODUCTION

REVIEW OF PREVIOUS WORK BASED UPON THE 3-D COLOR HISTOGRAM

PROPOSED METHOD: A CDF WITH AN ISO-LUMINANCE-PLANE BOUNDARY

EXPERIMENTS

PROPOSED METHOD: A CDF WITH AN ISO-LUMINANCE-PLANE BOUNDARYWhere is the input intensity

Since the ideal output pdf is uniform over all values of n , the output cdf isSince , we obtain

PROPOSED METHOD: A CDF WITH AN ISO-LUMINANCE-PLANE BOUNDARY

PROPOSED METHOD: A CDF WITH AN ISO-LUMINANCE-PLANE BOUNDARY

OutlineINTRODUCTION

REVIEW OF PREVIOUS WORK BASED UPON THE 3-D COLOR HISTOGRAM

PROPOSED METHOD: A CDF WITH AN ISO-LUMINANCE-PLANE BOUNDARY

EXPERIMENTS

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Thank you