Yes, pictures can be considered a form of text evidence, especially in contexts where visual information supports or enhances a written argument or claim. For instance, in fields such as art history, sociology, and literature, images can provide context, illustrate themes, or serve as primary sources that bolster textual analysis.
In academic writing, photographs, illustrations, charts, and graphs can serve as evidence when properly analyzed and discussed in conjunction with the text. It's important to provide interpretation and context surrounding the images to clarify how they relate to the argument being made.
In summary, while pictures are not "text" in the traditional sense, they can be valuable forms of evidence supporting a text's claims or arguments.