The meaning of a poem having a picture-like feel is that when you recite it, when you read it, you will feel integrated into the poem.
For example, a poem describes a waterfall. When you read this poem, you feel that there is a waterfall in front of you.
For example, this poem describes the beauty of a park. When you read this poem, the beauty of the park will appear in front of you. This is the sense of picture, the sense of picture when reading the poem.
Literary perspective:
From a literary perspective, the sense of picture can give people an immersive feeling through text description. Think carefully about the books you have read. They are mainly divided into professional books, literary books and novels. Those that can become classics are all those with a strong visual sense. For example, to describe a small river, it means a small river leading into the distance.
Another way of expressing it is, a crooked stream, with the bottom covered with pebbles, and the clear stream flowing along the crooked river to the unknown distance. These two expressions are purely different in terms of describing beauty. One is simple and the other is rich. This is also the best example I can think of at the moment.