simple background
An image with an empty or featureless background.
As a rule of thumb, such pictures can have their main subject(s) easily extracted from the background and placed on other backgrounds. Backgrounds that don't "exist", exist as as an infinite empty void, aren't physically "lived in", or lacking in significant detail or iconic elements can be considered.
A fully transparent background also counts for simple.
Immediately recognizable background patterns, like grid background or sunburst background should be tagged as such, but depending on its integration can be a candidate for simple (i.e. flat color or of low detail).
Examples
另请参见
根据经验，此类图片可以轻松地将其主要主题从背景中提取出来并放置在其他背景上。可以考虑不“存在”、作为无限空虚存在、物理上不“存在”或缺乏重要细节或标志性元素的背景。
立即可识别的背景图案，如网格背景或旭日背景，应如此标记，但根据其集成，可以是简单的候选者（即平面颜色或低细节）。
立即可识别的背景图案，如网格背景或旭日背景，应如此标记，但根据其集成，可以是简单的候选者（即平面颜色或低细节）。