Can multiple pictures( or Frame) be suitable for the type area, Automatic equivalence?

If I needed to to this - I'd anchor them in a text frame and add an invisible rectangle between the 3 objects to space them.

Alternatively, you could place the images in a table and space out the images this way.

*edit* I see @Doc Maik also suggested a table workflow.

Good idea 

@dublove 

Easy to automate - but you can quite quickly do it manually:

1) select frame that defines finall size,

2) create new Object Style,

3) edit this new object style - by "activating" ADJUST HEIGHT & WIDTH:

4) set fitting options,

5) apply this ObjectStyle to frames you want to resize,

6) align objects vertically - top,

7) move left and right objects accordingly,

😎 select all three objects and use DISTRIBUTE SPACING:

RED - unchecked,

Unless you have 100s of those to align...

InDesign has a built in grid feature. Or you can use Content Collector with a predefined Object Style. 

I had a hard time understanding, but I think he/she means to "equalize the object size and apply vertical alignment and horizontal distribution by a script".

@dublove : in a text box, there are no columns unless you set them. If the images are supposed to be in flow text, the position is not defined. One solution could be to use an invisbile table. Another to put them floating above the text. However, a script that does the aligment and size change you must find or create yourself.