Final answer:
The application that completes the picture using a top-down approach is image processing.
Step-by-step explanation:
The application that completes the picture using a top-down approach is image processing. Top-down processing occurs when previous experience and expectations are used to recognize stimuli. In the context of image processing, a top-down approach involves using prior knowledge to interpret and enhance an image. For example, in medical imaging, a top-down approach can be used to analyze an X-ray image and identify specific structures like bones or organs.