This is supported from 10.1 onwards.
This document discusses the historgram object as
returned by the REST API.
A histogram consists of a dictionary of name-value pairs.
{
"size" : <size>, //int, number of bins
"min" : <min>, //number, minimum value
"max" : <max>, //number, maximum value
"counts" : [<count1>,<count2>,<count3>] //int, counts of pixels in each bin. The width of each bin is (max-min)/size.
}
{
"size" : 256,
"min" : -0.5,
"max" : 255.5,
"counts" : [
42915,
23218,
24832,
25925
36054,
57097,
61278,
65211
...
]
}