Cross Reference: /external/opencv3/doc/py_tutorials/py_imgproc/py_histograms/images

`Name`	`Date`	`Size`
Up to higher level directory
`histograms_1d.jpg`	21-Oct-2016	`4K`
`histograms_2d.jpg`	21-Oct-2016	`3.4K`
`histograms_bp.jpg`	21-Oct-2016	`3.5K`
`histograms_equ.jpg`	21-Oct-2016	`4.1K`