ImageChannels[image] gives the number of channels present in the data for the Image object image.
ImageDimensions[image] gives the pixel dimensions of the raster associated with an Image object image.
ImageQ
(Built-in Mathematica Symbol) ImageQ[image] yields True if image has the form of a valid Image object, and False otherwise.
ImageReflect[image] reverses image by top-bottom mirror reflection. ImageReflect[image, side] reverses image by reflecting it so that the specified side goes to the opposite ...
ImageRegion is an option for cells that specifies the size and position of the bounding box within which a graphic is rendered.
ImageType[image] gives the underlying type of values used for each pixel element in the Image object image.
Infix
(Built-in Mathematica Symbol) Infix[f[e_1, e_2, ...]] prints with f[e_1, e_2, ...] given in default infix form: e_1~f~e_2~f~e_3 .... Infix[expr, h] prints with arguments separated by h: e_1 h e_2 h e_3 ...
InitializationCell is an option for Cell that specifies whether the cell should be tagged to be evaluated by the Mathematica kernel when the notebook that contains it is ...
InputStream["name", n] is an object that represents an input stream for functions such as Read and Find.
InString[n] is a global object that is assigned to be the text of the n\[Null]^th input line.