公开(公告)号：JPH07143455A

公开(公告)日：1995-06-02

申请号：JP13627294

申请日：1994-05-26

Applicant: ST MICROELECTRONICS SRL

Inventor： SCALISE FABIO ,  POLUZZI RINALDO

IPC: H04N7/015

Abstract: PURPOSE: To reduce the hardware silicon area of a video image decoder by reducing the amount of memory lines and, at the same time, to improve the modularity of the decoder. CONSTITUTION: A video image decoder incorporates channels (J and L), their corresponding processing blocks 13 and 14 and a demultiplexer 12 which receives TV signals from transmission channels (J and L) so as to individually process signals from the channels (J and L). A video image decoder for implementing a processing algorithm in a 40-ms mode on a high-resolution TV receiver of a type suitable for processing TV signals received on the corresponding transmission channels (J and L) and the signal processing method of the decoder can be obtained.

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

IPC: H04N5/14 ,  H04N5/44 ,  H04N7/01

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).

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

IPC: H04N5/21 ,  G06T5/00 ,  G06T5/20 ,  G06T1/00

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.

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

IPC: G03B27/73 ,  G06T5/00 ,  G06T7/40 ,  H04N9/64 ,  G06T1/00

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).

公开(公告)号：DE69329332T2

公开(公告)日：2001-02-22

申请号：DE69329332

申请日：1993-05-26

Applicant: ST MICROELECTRONICS SRL

Inventor： SCALISE FABIO ,  POLUZZI RINALDO

IPC: H04N7/015 ,  H04N7/00

Abstract: A video image decoder architecture for implementing a processing algorithm in the 40-ms mode on high-resolution TV sets, of a kind adapted to handle TV signals being received on respective transmission channels (A,C), comprises: a video signal demultiplexer (12) being input said transmission channels (A,C); respective processing blocks (13,14) for separately handling the signals from each of the channels (A,C) and comprising, a video image format converter (15), a local memory (17) connected after the converter, and at least one median filter (25) and one systolic filter (27) cascade connected after said memory for restoring, by interpolation, signal samples related to successive lines of the video image;and a summing node (11) for adding together the outputs from each processing block (13,14) by obtaining a time mean between restored samples (Ai,Ci) of the channels (A,C). This architecture allows a drastic reduction in the number of memories required for processing the restore algorithm, as well as a reduction in overall silicon area for the system, and accordingly, the possibility of having the whole 40-millisecond processing portion integrated to a single chip.

公开(公告)号：DE69530566T2

公开(公告)日：2004-03-25

申请号：DE69530566

申请日：1995-01-13

Applicant: ST MICROELECTRONICS SRL

Inventor： MANCUSO MASSIMO ,  MORETTI PAOLO ,  POLUZZI RINALDO ,  RIZZOTTO GIANGUIDO

IPC: G06T7/60 ,  G06K9/46

Abstract: A fuzzy method for the recognition of geometric shapes in images, the particularity whereof is that it comprises the following steps: recognition of at least one edge of a curve of an image; recognition of the gradient of the edge; correction of the gradient by virtue of first fuzzy means; and determination of the number of points that belong to the curve by virtue of second fuzzy means. The process according to the present invention is performed by a fuzzy device for the recognition of geometric shapes in images that comprises: an edge detector, adapted to recognize at least one edge of a curve of an image and adapted to recognize the gradient of the edge; a fuzzy gradient corrector, adapted to correct said gradient; a fuzzy vote attributor, adapted to determine the number of points that belong to the curve.

公开(公告)号：DE69720192T2

公开(公告)日：2003-12-04

申请号：DE69720192

申请日：1997-05-30

Applicant: ST MICROELECTRONICS SRL

Inventor： MANCUSO MASSIMO ,  POLUZZI RINALDO

IPC: G06T9/00 ,  H04N1/41 ,  H04N7/26 ,  H04N7/30

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).

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

IPC: G06T9/00 ,  H04N1/41 ,  H04N7/26 ,  H04N7/30

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).

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

IPC: H03H17/00 ,  H04N5/21 ,  H04N9/64

公开(公告)号：DE69736347D1

公开(公告)日：2006-08-31

申请号：DE69736347

申请日：1997-05-09

Applicant: ST MICROELECTRONICS SRL

Inventor： MANCUSO MASSIMO ,  D ALTO VIVIANA ,  POLUZZI RINALDO ,  AIROLDI FABRIZIO

IPC: H04N1/40 ,  H04N5/225 ,  H04N5/91 ,  H04N5/92

Abstract: Digital photography apparatus (100), particularly a digital still camera, comprising means (110-125) for acquiring a digital image, compression means (130) for obtaining a compressed image, and a memory (135) for storing the compressed image, the apparatus also including processing means (140) for obtaining a processed image and corresponding processing parameters from the image acquired, the processing means (140) supplying as an output, in a first operative condition, the processed image to be compressed by the compression means (130) and, in a second operative condition, the image acquired to be compressed by the compression means (130) and the processing parameters to be stored in the memory (135).