Abstract: A goggle for use in snowsports comprises a body (14) and a detachable lens assembly (12), magnets or magnetic elements being provided on the lens assembly (12) and magnets or magnetic elements being provided in corresponding positions on the body (14), for detachably holding the lens assembly (12) to the body (14), at least one tongue (34) extending from the rear surface (36) of the lens assembly (12) on each lateral side (18, 54) of the lens assembly (12), each tongue (34) extending in a direction substantially behind the lens assembly (12), into the body (14) when the lens assembly (12) is fitted to the body (14), and an aperture (42, 66) extending through each tongue (34), and at least one moveable clip (72) being provided on each lateral side (18, 54) of the body (14), each clip (72) being movable between a released position and an engaged position, each clip (72) including a retaining finger (82) which in the engaged position passes into the aperture (42, 66) in the tongue (34), preventing detachment of

Abstract: A goggle for use in snowsports comprises a body (14) and a detachable lens assembly (12), magnets or magnetic elements being provided on the lens assembly (12) and magnets or magnetic elements being provided in corresponding positions on the body (14), for detachably holding the lens assembly (12) to the body (14), at least one tongue (34) extending from the rear surface (36) of the lens assembly (12) on each lateral side (18, 54) of the lens assembly (12), each tongue (34) extending in a direction substantially behind the lens assembly (12), into the body (14) when the lens assembly (12) is fitted to the body (14), and an aperture (42, 66) extending through each tongue (34), and at least one moveable clip (72) being provided on each lateral side (18, 54) of the body (14), each clip (72) being movable between a released position and an engaged position, each clip (72) including a retaining finger (82) which in the engaged position passes into the aperture (42, 66) in the tongue (34), preventing detachment of

Abstract: A method of distinguishing areas of natural and synthetic content in video information represented by pixels arranged in a matrix of lines is disclosed. A luminance histogram (hist(L)) of pixel values for each line of the matrix is created. The distances (d) between each of the histogram values for each line are then determined. A line is classified as containing natural content if the majority of distances (d) is less than or equal to a predetermined value. Neighboring lines containing natural content are then grouped together to create groups of natural content. The process can then be repeated a predetermined number of times to more precisely define areas with natural content.