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公开(公告)号：DE69736347T2
公开(公告)日：2007-07-12
申请号：DE69736347
申请日：1997-05-09
Applicant: ST MICROELECTRONICS SRL
Inventor： MANCUSO MASSIMO , D ALTO VIVIANA , POLUZZI RINALDO , AIROLDI FABRIZIO
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).
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公开(公告)号：DE69421377T2
公开(公告)日：2000-03-23
申请号：DE69421377
申请日：1994-02-28
Applicant: ST MICROELECTRONICS SRL
Inventor： MANCUSO MASSIMO , POLUZZI RINALDO , RIZZOTTO GIANGUIDO
Abstract: Filter achieving noise reduction and digital signal image edge exaltation comprising first and second noise reduction circuit means 2 and 3 designed to elect an image edge. Said first and second noise reduction circuit means 2 and 3 comprise each a first and second comparison element (S1,S2,S3,S4) whose input terminals are designed to receive separate digital signals of an image and an inferential circuit (C1,C2) connected to said comparison elements. Each inferential circuit (C1,C2) comprises a fuzzy logic unit designed to define activation levels (Vi) dependent upon signals generated by the comparison elements. The filter (1) comprises also a noise detection circuit (4) and an image edge detection circuit (6) both connected to the noise reduction circuit means (2,3) and designed to perform operations in accordance with fuzzy logic rules on the basis of activation levels (Vi) defined in the inferential circuits (C1,C2). The filter 1 also includes a noise reduction circuit (5) connected to the noise detection circuit (6) and designed to filter the digital image signals on the basis of the operations performed by the circuit (4). In the filter (1) is also included an image edge exalting circuit (7) connected to the noise reduction circuit (5) and to the image edge detection circuit (4) designed to perform on filtered digital image signals an image edge exaltation on the basis of the operations performed by the image edge detection circuit (6).
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公开(公告)号：DE60039689D1
公开(公告)日：2008-09-11
申请号：DE60039689
申请日：2000-07-10
Applicant: ST MICROELECTRONICS SRL
Inventor： BRUNA ARCANGELO , MANCUSO MASSIMO , GALLUZZO AGOSTINO
IPC: G02B7/36 , H04N5/232 , H04N5/235 , H04N19/122 , H04N19/126 , H04N19/14 , H04N19/149 , H04N19/18 , H04N19/186 , H04N19/42 , H04N19/60
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 providing (410-430) an incomplete digital image wherein at least one component is missing in each element, obtaining (433-435) the digital image from the incomplete digital image, splitting (455) the digital image into 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 group using a corresponding quantization table scaled by a gain factor; the method further comprises the steps of determining (440) at least one energy measure of the incomplete digital image and estimating (445-450) the gain factor as a function of the at least one energy measure, the function being determined experimentally according to a target compression factor.
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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
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).
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公开(公告)号：DE60114651T2
公开(公告)日：2006-06-01
申请号：DE60114651
申请日：2001-12-14
Applicant: ST MICROELECTRONICS SRL
Inventor： BATTIATO SEBASTIANO , MANCUSO MASSIMO
Abstract: A method of compressing digital images acquired in CFA (colour filter array) format (3) that utilizes optimised quantization matrices. The method, basing itself on the statistical characterization of the error introduced during the processing phase (4,5) that precedes compression (6), appropriately modifies the coefficients of any initial quantization matrix, even of a standard type, obtaining a greater compression efficiency without introducing further quality losses.
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Patent Agency Ranking
公开(公告)号：DE60114651D1
公开(公告)日：2005-12-08
申请号：DE60114651
申请日：2001-12-14
Applicant: ST MICROELECTRONICS SRL
Inventor： BATTIATO SEBASTIANO , MANCUSO MASSIMO
Abstract: A method of compressing digital images acquired in CFA (colour filter array) format (3) that utilizes optimised quantization matrices. The method, basing itself on the statistical characterization of the error introduced during the processing phase (4,5) that precedes compression (6), appropriately modifies the coefficients of any initial quantization matrix, even of a standard type, obtaining a greater compression efficiency without introducing further quality losses.
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公开(公告)号：DE69530566D1
公开(公告)日：2003-06-05
申请号：DE69530566
申请日：1995-01-13
Applicant: ST MICROELECTRONICS SRL
Inventor： MANCUSO MASSIMO , MORETTI PAOLO , POLUZZI RINALDO , RIZZOTTO GIANGUIDO
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.
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公开(公告)号：DE69623253D1
公开(公告)日：2002-10-02
申请号：DE69623253
申请日：1996-03-07
Applicant: ST MICROELECTRONICS SRL
Inventor： MANCUSO MASSIMO , POLUZZI RINALDO
Abstract: A processing device for video signals comprising: a memory device (1) suitable to store discrete image elements of a video field; a filtering device (3) supplied by the memory device and suitable to recover errors introduced by the memory device. The filtering device (3) comprises: a filter (4) having an input supplied with digital signals representative of values of a plurality of discrete image elements (P1...P8,X) comprising an image element (X) to be examined and neighbouring image elements (P1...P8), the discrete image elements being stored in the memory device (1), and an output supplying digital signals (CO) representative of a filtered value of the image element to be examined (X); noise detector means (5) operating on fuzzy-logic rules having an input supplied with the digital signals representative of the plurality of values of the image elements (P1...P8,X) and an output supplying a weight signal (K) representative of a degree of erroneousness of the discrete image element to be examined (X), the noise detector circuit (5) determining the degree of erroneousness comparing the value of the image element to be examined (X) with the values of the neighbouring image elements (P1...P8); soft-switch means (7) having a first input supplied with the digital signals representative of the value of the image element to be examined (X), a second input supplied with the output (CO) of the filter (4), a third input supplied with the weight signal (K), and an output supplying digital signals (O) representative of a weighted average of the output of the filter (CO) and of the digital signals representative of the value of the image element to be examined (X) according to respective weights determined by the degree of erroneousness.
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公开(公告)号：DE69426820T2
公开(公告)日：2001-08-16
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：DE69605018T2
公开(公告)日：2000-06-08
申请号：DE69605018
申请日：1996-02-13
Applicant: ST MICROELECTRONICS SRL
Inventor： MARQUES PEREIRA RICARDO ALBERT , MANCUSO MASSIMO , POLUZZI RINALDO
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.
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