The background of the image frame will change color to match that color—and so will the white areas of the photo because InDesign treats white in grayscale images as transparent. Thus ...

Remove the background of the colored picture ... The contrast ranges from black at the weakest intensity to white at the strongest. A greyscale image in which the value of each pixel is a single ...

Here, I’ll focus on isolating an object and knocking out the background ... area represents the image mask and it’s fully editable. A Photoshop mask is actually a grayscale image, shown ...