Patent ID: 6449003
Filing Date: 2002-09-10
Classification: H04N

Abstract:
A method for converting an image format of n-line, three-dimensional electronic images produced with line polarization into m-line images whose respective, immediately neighboring two lines are respectively polarized in alternation into a first and a second direction upon viewing, wherein all lines polarized in the first direction are employed for the presentation of a first sub-image and all lines polarized in the second direction are employed for the presentation of a second sub-image, given that the first and second sub-images are needed for three-dimensional viewing, the method comprising the steps of:abbreviating as a whole number a fraction formed of the values n and m having the form m/n to form mâ€²/nâ€²; dividing the lines of the image to be converted into first groups having a respective line plurality nâ€²; combining two of the first groups which abut one another to respective second groups, wherein a last first group remaining by itself is combined with an imaginary dummy group of the same size having nothing but dummy lines to form a last second group; determining |p| lines to be inserted, if mâ€²>nâ€², twice per respective second group in the conversion according to an equation |p|=|mâ€²âˆ’nâ€²|; determining |p| lines to be skipped, if mâ€²inserting |p| lines, if mâ€²>nâ€², twice in each of the second group wherein two successive lines are always affected by an insertion and, given an odd-numbered |p|, the last line not yet affected by an insertion is affected by an insertion in the one first group in a meeting area of the first groups abutting one another in a respective second group, and the first line not yet affected by an insertion is affected by an insertion in the other group; inserting |p| lines, if mâ€²>nâ€², twice in each of the second group wherein two successive lines are always affected by a skipping and, given an odd-numbered |p|, the last line not yet affected by a skipping is affected by a skipping in the one first group in a meeting area of the first groups abutting one another in a respective second group, and the first line not yet affected by a skipping is affected by a skipping in the other group; and transposing with one another in sequence the two inward lines of the four-line groups respectively arising after an addition of lines to two successive lines of the second group.