task two

1. what these properties of image file types mean  

       i. Pixel dimensions= pixel dimensions are the horizontal and vertical measurements of an image expressed with pixels. The pixel dimensions may be determind by multiplying both width and the height by the dpi.  A digital camra will also have pixel dimensions.

     ii. Dpi Resolution= It stands for Dots per Inch. Its a measure of spatial Printing or video dot density,  In perticular the number of individual dots taht can be placed in a line within the span of 1 inch (2.54CM).
     iii. Quality ( of an image)= Image quality is a characteristic of an image that measures the preceived image degradation (Typically, compared to an ideal or perfect image). Imaging systems may introduce some amounts of distortion or artifacts in the signal, so the quality assessment is an important problem.
    iv. Compression settings=  Most digital cameras take photos that are saved in the .jpg file format.