Bildwissenschaft is a German word that means "image science." Imagine you have a picture book, and every picture in that book tells you something. In Bildwissenschaft, people study how those pictures communicate something to us using shapes, colors, and symbols.
You know how you can look at a picture and feel happy or sad or excited? That's because the picture is communicating an emotion or a feeling. Bildwissenschaft is all about understanding how pictures do that.
Bildwissenschaft also looks at how pictures are made and why they are made in a certain way. This helps us understand the story behind the picture and what the person who made it was trying to tell us. Sometimes, pictures are made to sell things or to spread a message, so Bildwissenschaft helps us understand why someone made that picture and what they wanted to say.
In conclusion, Bildwissenschaft is like a secret code to understand pictures and what they mean.