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公开(公告)号：DE69720192D1
公开(公告)日：2003-04-30
申请号：DE69720192
申请日：1997-05-30
Applicant: ST MICROELECTRONICS SRL
Inventor： MANCUSO MASSIMO , POLUZZI RINALDO
Abstract: A post-processing method for reducing artifacts in block-coded digital images, characterized by providing for: dividing an input image (In) into a plurality of image blocks (IB); for each image block (IB), estimating global features (GF) of said image block providing information on an average content of image edges along the horizontal and vertical directions of said image block (IB); for each pixel (Px) of an image block (IB) under examination, estimating local features (LF) for said pixel (Px) providing information on the content of image edges along the horizontal and vertical directions of an image area near said pixel (Px); modifying the value of said pixel (Px) according to both said global features (GF) of the image block (IB) to which said pixel (Px) belongs and said local features (LF) of the image area near said pixel (Px).
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公开(公告)号：DE69426820D1
公开(公告)日：2001-04-12
申请号：DE69426820
申请日：1994-09-30
Applicant: ST MICROELECTRONICS SRL
Inventor： D ALTO VIVIANA , MANCUSO MASSIMO , POLUZZI RINALDO , RIZZOTTO GIANGUIDO
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公开(公告)号：DE60119095D1
公开(公告)日：2006-06-01
申请号：DE60119095
申请日：2001-08-29
Applicant: ST MICROELECTRONICS SRL
Inventor： GUARNERA MIRKO , MANCUSO MASSIMO , PULIAFITO ANTONIO , ARENA ANTONINO , VILLARI MASSIMO
IPC: H04N5/91 , H04N9/04 , H04N9/07 , H04N9/79 , H04N101/00
Abstract: Presented is a digital camera, comprising: a sensor (205) for sensing an image and producing a first signal; a Bayer pattern producer (210) coupled to said sensor (205) and structured to produce a Bayer pattern from said first signal; a splitter (212) structured to split said Bayer pattern into separate color channels; a compressor (220) for compressing said color channels into a compressed image; an output interface (226) structured to transmit said compressed image on a communication channel; and a color interpreter structured to perform a modification on exactly one of said color channels from said splitter (212) prior to sending said color channels to said compressor (220). Additionally described is a network that operates with said digital camera to perform certain functions, as directed by a user of said digital camera.
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公开(公告)号：DE60203166T2
公开(公告)日：2006-03-23
申请号：DE60203166
申请日：2002-06-12
Applicant: ST MICROELECTRONICS SRL
Inventor： MESSINA GIUSEPPE , MANCUSO MASSIMO , BATTIATO SEBASTIANO
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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公开(公告)号：DE69727911D1
公开(公告)日：2004-04-08
申请号：DE69727911
申请日：1997-04-24
Applicant: ST MICROELECTRONICS SRL
Inventor： MANCUSO MASSIMO , POLUZZI RINALDO , D ALTO VIVIANA , MOLINARI LUCA
Abstract: A method and a device for motion estimated and compensated Field Rate Up-conversion (FRU) for video applications, providing for: a) dividing an image field to be interpolated into a plurality of image blocks (IB), each image block made up of a respective set of image elements of the image field to be interpolated; b) for each image block (K(x,y)) of at least a sub-plurality (Q1,Q2) of said plurality of image blocks, considering a group of neighboring image blocks (NBÄ1Ü-NBÄ4Ü); c) determining an estimated motion vector for said image block (K(x,y)), describing the movement of said image block (K(x,y)) from a previous image field to a following image field between which the image field to be interpolated is comprised, on the basis of predictor motion vectors (PÄ1Ü-PÄ4Ü) associated to said group of neighboring image blocks; d) determining each image element of said image block (K(x,y)) by interpolation of two corresponding image elements in said previous and following image fields related by said estimated motion vector. Step c) provides for: c1) applying to the image block (K(x,y)) each of said predictor motion vectors to determine a respective pair of corresponding image blocks in said previous and following image fields, respectively; c2) for each of said pairs of corresponding image blocks, evaluating an error function (errÄiÜ) which is the Sum of luminance Absolute Difference (SAD) between corresponding image elements in said pair of corresponding image blocks; c3) for each pair of said predictor motion vectors, evaluating a degree of homogeneity (H(i,j)); c4) for each pair of said predictor motion vectors, applying a fuzzy rule having an activation level (rÄkÜ) which is higher the higher the degree of homogeneity of the pair of predictor motion vectors and the smaller the error functions of the pair of predictor motion vectors; c5) determining an optimum fuzzy rule having the highest activation level (rÄoptÜ), and determining the best predictor motion vector (PÄminÜ) of the pair associated to said optimum fuzzy rule having the smaller error function; c6) determining the estimated motion vector for said image block (K(x,y)) on the basis of said best predictor motion vector (PÄminÜ).
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Patent Agency Ranking
公开(公告)号：DE60008716D1
公开(公告)日：2004-04-08
申请号：DE60008716
申请日：2000-07-10
Applicant: ST MICROELECTRONICS SRL
Inventor： BRUNA ARCANGELO , MANCUSO MASSIMO , GALLUZZO AGOSTINO
IPC: G06T9/00 , H04N19/126 , H04N19/14 , H04N19/149 , H04N19/18 , H04N19/186 , H04N19/196 , H04N19/60 , H04N7/30
Abstract: A method (400) of compressing a digital image including a matrix of elements each one consisting of a plurality of digital components of different type representing a pixel, the method comprising the steps of splitting (455) the digital image into a plurality of blocks and calculating, for each block, a group of DCT coefficients for the components of each type, and quantizing (460-465) the DCT coefficients of each block using a corresponding quantization table scaled by a gain factor for achieving a target compression factor; the method further comprises the steps of determining (440) at least one energy measure of the digital image, and estimating (441-450) the gain factor as a function of the at least one energy measure, the function being determined experimentally according to the target compression factor.
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公开(公告)号：DE69724412D1
公开(公告)日：2003-10-02
申请号：DE69724412
申请日：1997-05-12
Applicant: ST MICROELECTRONICS SRL
Inventor： MANCUSO MASSIMO , D ALTO VIVIANA , SIRTORI DANIELE , POLUZZI RINALDO
Abstract: The level of Gaussian noise in a memory field being scanned by rows is reduced by reconstructing each pixel by fuzzy logic processors, the latter processing the the values of pixels neighbouring the pixel being processed and belonging to a processing window defined by the last scanned row and the row being scanned, thus minimizing the memory requisite of the filtering system to a single row. The system perform an adaptive filtering within the current field itself and does not produce @ edge-smoothing @ effects as in prior adaptive filtering systems operating on consecutive fields.
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公开(公告)号：DE69721790D1
公开(公告)日：2003-06-12
申请号：DE69721790
申请日：1997-12-30
Applicant: ST MICROELECTRONICS SRL
Inventor： COLLA FEDERICA , MANCUSO MASSIMO , POLUZZI RINALDO
Abstract: A digital image color correction device employing fuzzy logic, for correcting a facial tone image portion of a digital video image, characterized in that it comprises: a pixel fuzzifier unit (1) receiving in input a stream of pixels belonging to a sequence of correlated frames of a digital video image and computing a multi level value representing a membership of each pixel to a skin color class; a global parameter estimator (2) receiving in input each of said pixel and the relative membership value, and computing a first and a second parameter which define the characteristics of a portion of said image that belongs to said skin color class; a processing unit (3) connected downstream to said global parameter estimator and to said pixel fuzzifier unit and adapted to correct each of the pixels of said portion of the image that belongs to said skin color class, according to said first global parameter (300), to obtain corrected pixels; and a processing switch (4) for outputting said pixels or said corrected pixels according to said second global parameter (400).
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公开(公告)号：DE69605106D1
公开(公告)日：1999-12-16
申请号：DE69605106
申请日：1996-07-09
Applicant: ST MICROELECTRONICS SRL
Inventor： THOMAS JOSEPH , D ALTO VIVIANA , MANCUSO MASSIMO
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公开(公告)号：DE60141901D1
公开(公告)日：2010-06-02
申请号：DE60141901
申请日：2001-08-31
Applicant: ST MICROELECTRONICS SRL
Inventor： BOSCO ANGELO , MANCUSO MASSIMO
Abstract: A method of filtering and an image filter (10) is disclosed. The filter is provided for a digital camera including image sensors sensitive to light, a color filter placed over sensitive elements of the sensors and patterned according to a Bayer mosaic pattern layout and an interpolation algorithm joining together the digital information provided by differently colored adjacent pixels in said Bayer pattern. The filter (10) is adaptive and includes a noise level computation block (26) for operating directly on a said Bayer pattern data set of for each color channel thus removing noise while simultaneously preserving picture detail.
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