公开(公告)号：JPH1127672A

公开(公告)日：1999-01-29

申请号：JP14425098

申请日：1998-05-26

Applicant: ST MICROELECTRONICS SRL

Inventor： MANCUSO MASSIMO ,  POLUZZI RINALDO

IPC: G06T9/00 ,  H04N1/41 ,  H04N7/26 ,  H04N7/30 ,  H04N7/24

Abstract: PROBLEM TO BE SOLVED: To reduce image quality deterioration by correcting a pixel value according to both an global feature of a video image block to which the pixel belongs and a local feature of video areas in the vicinity of the pixel so as to attenuate grating noise and stepwise noise. SOLUTION: A global feature GF and a local feature LF of an input video image In evaluated by a feature extract block FE is fed to a fuzzy processing block FUZZY as an input, and a parameter FA proper to decision of a type of filter processing is decided according to a fuzzy criterion. A filter pattern FP decided by a filter compensation block FC is fed to a processing block PROC to which the input video image In is directly supplied and the block PROC applies filter processing of the input video image In based on the filter pattern FP. Thus, low pass filter processing is applied to video areas in the vicinity of grating noise and an edge to reduce both grating noise and stepwise noise.

公开(公告)号：JPH08190628A

公开(公告)日：1996-07-23

申请号：JP20877595

申请日：1995-08-16

Applicant: ST MICROELECTRONICS SRL ,  CONS RIC MICROELETTRONICA

Inventor： PENNINO LAURA ,  MANCUSO MASSIMO ,  TRAVAGLIA FEDERICO ,  POLUZZI RINALDO ,  RIZZOTTO GIANGUIDO

IPC: G06F9/44 ,  G06N7/02 ,  G06T5/00 ,  G06T5/20

Abstract: PROBLEM TO BE SOLVED: To perform an excellent noise reduction operation while preserving useful high-pass (high band) information. SOLUTION: This device is provided with an interface 1 for obtaining the gray levels of the pixel to be processed of images and the adjacent pixel, a difference circuit 2 for generating the difference of the gray levels of the pixel to be processed and the adjacent pixel, a fuzzy flat area smoothing circuit 8 for performing the low-pass (low band) smoothing of an almost uniform area stipulated by the pixel and the adjacent pixel, an edge preservation smoothing circuit 9 for performing a low-pass filtering processing to a high frequency information area stipulated by the pixel and the adjacent pixel, an area voter circuit 4 for supplying a measurement value for examining whether or not the area stipulated by the pixel and the adjacent pixel is almost uniform and a soft switching circuit 10 for weighting the output of the smoothing circuits 8 and 9 based on the measurement value.

公开(公告)号：JPH08102873A

公开(公告)日：1996-04-16

申请号：JP10261495

申请日：1995-04-26

Applicant: CONS RIC MICROELETTRONICA ,  ST MICROELECTRONICS SRL

Inventor： MANCUSO MASSIMO ,  POLUZZI RINALDO ,  RIZZOTTO GIANGUIDO

IPC: H03H21/00 ,  H04N5/21 ,  H04N5/44 ,  H04N9/64

Abstract: PURPOSE: To reduce noise of a television signal and also perform simultaneous scan conversion by including a noise reducing circuit and a simultaneous scan conversion circuit of a TV signal. CONSTITUTION: A filter archtecture is provided with at least one filter 3 which has plural digital inputs Pi and X that receive television signal elements through an interface and also has a few outputs NR and includes at least one interpolating block which takes a result of a filtering operation for noise that is associated with a television signal by the outputs NR, is connected to an input in the filter 3, also operates in fuzzy theory and executes scan conversion of a television signal that should be presented to other outputs SRC of the filter 3.

公开(公告)号：DE60227643D1

公开(公告)日：2008-08-28

申请号：DE60227643

申请日：2002-04-23

Applicant: ST MICROELECTRONICS SRL

Inventor： MESSINA GIUSEPPE ,  BATTIATO SEBASTIANO ,  MANCUSO MASSIMO

IPC: G06T3/40

公开(公告)号：DE69605106T2

公开(公告)日：2000-07-20

申请号：DE69605106

申请日：1996-07-09

Applicant: ST MICROELECTRONICS SRL

Inventor： THOMAS JOSEPH ,  D ALTO VIVIANA ,  MANCUSO MASSIMO

IPC: H04N9/68 ,  H04N9/64

公开(公告)号：DE69605018D1

公开(公告)日：1999-12-09

申请号：DE69605018

申请日：1996-02-13

Applicant: ST MICROELECTRONICS SRL

Inventor： MARQUES PEREIRA RICARDO ALBERT ,  MANCUSO MASSIMO ,  POLUZZI RINALDO

IPC: H04N5/208 ,  G06T5/20 ,  G06T7/60 ,  H03H17/00 ,  H04N5/44 ,  H04N7/01

Abstract: An interpolation filter for video signals comprises: first circuit means (R1-R3,L1-L3,C,7-9) supplied by discrete image elements (p1-p10) for detecting an image edge; second circuit means (10) supplied by the first circuit means for generating a first signal (DDA) corresponding to an average of the discrete image elements (p1-p10) along a direction of the image edge; third circuit means (11,12,13) supplied by the first circuit means for detecting a texture image area wherein an image edge cannot be univocally determined and for generating a second signal (K) depending on a degree of existance of the image edge; fourth circuit means (14), supplied by the first signal (DDA), the second signal (K) and a third signal (Mout), for generating an output signal (SWout) obtained by combining the first signal (DDA) with the third signal (Mout) in a proportion determined by the second signal (K), and multiplexing means (15) controlled by a control signal (CNT) for selectively coupling the third signal (Mout) to fourth signal (A), corresponding to an average of the discrete image elements (p1-p10) along a prescribed direction, or to a fifth signal (PF) corresponding to a previously received image element value.

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.

公开(公告)号：DE60130671D1

公开(公告)日：2007-11-08

申请号：DE60130671

申请日：2001-12-24

Applicant: ST MICROELECTRONICS SRL

Inventor： CASTORINA ALFIO ,  MANCUSO MASSIMO ,  BATTIATO SEBASTIANO

IPC: G06T5/00 ,  G06T5/40 ,  H04N1/407 ,  H04N5/235 ,  H04N9/04 ,  H04N101/00

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.

公开(公告)号：DE60008716T2

公开(公告)日：2005-02-10

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.