level adjust

Description

Match contrast and levels from one v_object to another

Arguments and Return Values

Arguments: Accepts two v_objects, an ignore value and an option.

Return Values: Modifies the src v_object but returns no values to the user.

Usage

Syntax: v_insert(obj = STRUCT, to = STRUCT [, ignore = FLOAT] [, opt = INT])

obj - First v_object which will have its values modified in the overlapping regions

to - Second v_object that the first v_object will be adjusted to.

ignore - Value that is not data. Default is -32768.

opt - Type of level adjustment desired. Default is 1.

• = 1 will perform linear fit (scale and offset)
• = 2 will offset only without scaling

Examples

dv> a
struct, 7 elements
    data: 500x300x1 array of byte, bsq format [150,000 bytes]
    h: 300
    lines: 0
    samples: 0
    w: 500
    x: 0
    y: 0
dv> b
struct, 7 elements
    data: 500x300x1 array of byte, bsq format [150,000 bytes]
    h: 300
    lines: 0
    samples: 0
    w: 500
    x: 250
    y: 150 

dv> d = level_adjust(src=a,dst=b,ignore=0)

Images

The left image is before, the middle image is the image the first image will be adjusted to, and the thrid image is the adjusted image.