Clarification: Image quality is measured by a set of many photography aspects, including: color accuracy, image brightness, the resolution amount and the appropriate exposure in a digital photo. With images of high quality, you can easily make prints of large sizes with the great sharpness and high color accuracy. In contrary, the prints shall be blurry and dull with images of the low quality.
You can have the image quality partly controlled via using the menu structure of a digital camera.
The appropriate lighting condition is very important to help you obtain images of great quality. For a point and shoot model, you can also use available scene modes to achieve the best of the exposure.