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    12.
    发明专利
    未知

    公开(公告)号：DE60135559D1

    公开(公告)日：2008-10-09

    申请号：DE60135559

    申请日：2001-11-19

    Applicant: ST MICROELECTRONICS SRL

    Inventor： CASTORINA ALFIO ,  MANCUSO MASSIMO ,  BATTIATO SEBASTIANO

    IPC: G06T5/50

    Abstract: A method of processing digital source images, each represented by pixel matrices, to obtain from two or more source images, representing one and the same real scene and acquired by utilizing different exposure levels, a final digital image capable of reproducing the real scene with an exposure latitude greater than that of each of the source images. The method, which can be advantageously used in digital still cameras, produces the final image by combining the source images with the help of a weighted mean constructed pixel by pixel. Thanks to a special filtering to which the weighting coefficients are subjected before the weighted mean operation, the method obtains a final image in which the source images are harmoniously combined with each other. A variant of the method can also be applied directly to digital images in CFA (Colour Filter Array) format.

    15.
    发明专利
    未知

    公开(公告)号：DE60203166D1

    公开(公告)日：2005-04-14

    申请号：DE60203166

    申请日：2002-06-12

    Applicant: ST MICROELECTRONICS SRL

    Inventor： MESSINA GIUSEPPE ,  MANCUSO MASSIMO ,  BATTIATO SEBASTIANO

    IPC: G06T3/40 ,  G06T5/00 ,  G06T5/50 ,  H04N3/15 ,  H04N1/40 ,  H04N7/01

    Abstract: A method for obtaining a high-resolution digital image from a plurality of starting images P,S formed by pixel matrices and acquired at a lower resolution. The method comprises a phase of combining the plurality of starting images P,S to generate a provisional high-resolution image HR formed by a pixel matrix. The method also comprises a calculation phase to associate a respective error with at least a part of the pixels of the provisional image HR , said calculation phase providing a first error associated with at least one first pixel, and a phase of at least partially processing the provisional image by modifying the pixels of this image on the basis of the respective errors associated with them. The method is characterized by the fact that the calculation phase includes the phase of: calculating a second error to associate with at least one second pixel situated in the vicinity of said first pixel in the matrix (HR ), said second error being calculated by using the first error associated with said at least one first pixel.

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