Final answer:
To select just the sunflowers in a photo, you can use the Magic Wand tool in photo editing software like Adobe Photoshop.
Step-by-step explanation:
To automatically detect the color boundaries of the sunflowers in a photo, you can use a tool called the Magic Wand tool in photo editing software like Adobe Photoshop. The Magic Wand tool selects pixels based on their similarity in color and tone. You can adjust the tolerance setting to make the tool select a larger or smaller range of colors. By clicking on one part of the sunflower, the Magic Wand tool will automatically detect and select the color boundaries of the flowers.