sentences:  This means that each pixel is stored as a single bit—i.e., a 0 or 1.The names "black-and-white", "B&W", monochrome or monochromatic are often used for this concept, but may also designate any images that have only one sample per pixel, such as grayscale images.In Photoshop parlance, a binary image is the same as an image in "Bitmap" mode.