The phrase "alter pictures" is correct and usable in written English.
You can use it when referring to changing or modifying images in some way, such as editing or retouching.
Example: "The graphic designer was hired to alter pictures for the marketing campaign to make them more appealing."
Alternatives: "modify images" or "edit photos."
"Technology has always altered pictures," said Hockney, who believes the old masters used camera obscura techniques.
Now the digitally altered pictures are at the centre of a looming legal action.
On a lighter note, the Daily Mirror won a What the Papers Say award in 2002 for a digitally altered picture of the Argentinian football team carrying handbags.
In apparent attempt at humor, Mr. Abdullah then presented an altered picture of Mr. Youssef in a Muslim woman's veil.
One antigovernment group posted an altered picture on Facebook of a Syrian television news anchorwoman on a pro-government channel wearing a hijab with a caption joking that it was her "new garment after the mufti's call for jihad".
This forgotten history, Cohen argues, presents a dramatically altered picture of American literature's role in antebellum culture, one in which its authority is far from assured, and its failures matter as much as its achievements.
Later, panellist Phil Jupitus shouted "Burn the witch!" when a digitally altered picture of Thatcher was shown on-screen.
Mutations in the photosynthetic apparatus that cause changes in the thylakoid arrangement give an altered picture of chloroplast thylakoid membranes with profound effect on the photosynthetic efficiency and capacity [ 18].
I didn't alter the pictures other than cropping them; take this comparison with a grain of salt, as it's not exactly scientific.
His influence, they say, stems from a prodigious knowledge acquired over four decades of how the sun, the oceans, the land, the atmosphere, ice and vegetation work together to shape the earth's climate; an ability to fashion that knowledge into a coherent picture and a quickness to discern how emerging bits of information and insight fit into or alter the picture.
