picture element; pel
Technical computing term for a single dot or sample in a digital image; synonymous with ピクセル (pixel), which is more common in everyday usage.
A picture element is the smallest unit of a digital image.
This image has coarse picture elements, so it becomes blurry when enlarged.
ピクセル is the common loanword for 'pixel' and is used in most contexts. 画像要素 is a more formal, technical Japanese term, often seen in academic or engineering texts.
Compound of 画像 (image) and 要素 (element), directly translating the English 'picture element'.