1. Image contour data generating apparatus, comprising: a single integrated inputting unit comprising an original film holding means, a scanning position input means and a contour position detecting means; said original film holding means being effective for holding an original film having an image thereon, said image having an image contour to be detected; said scanning position input means being effective for permitting an operator of said apparatus to identify a scanning position on said film holding means, and therefore a scanning position on said original film, corresponding to a selected portion of said image contour; said contour position detecting means including a scanning image sensor and being effective for moving said scanning image sensor to said scanning position, while said original film remains positioned at said original film holding means, said contour position detecting means being further effective for causing said image sensor to scan an area of said original film corresponding to said portion of said image contour and for generating an output signal indicative of said scanned area of said original film scanned by said image sensor; and arithmetic means for determining an actual contour of said selected portion of said image contour on the basis of said output signal.