公开(公告)号：US09386190B2

公开(公告)日：2016-07-05

申请号：US14811531

申请日：2015-07-28

Applicant: STMicroelectronics (Grenoble 2) SAS

Inventor： Fritz Lebowsky

IPC: G06K9/00 ,  H04N1/64 ,  G06T7/40 ,  H04N19/182 ,  H04N19/176 ,  H04N19/46 ,  H04N19/593 ,  H04N19/186 ,  H04N19/88 ,  H04N19/436 ,  H04N19/94

CPC classification number: H04N1/64 ,  G06T7/90 ,  H04N19/176 ,  H04N19/182 ,  H04N19/186 ,  H04N19/436 ,  H04N19/46 ,  H04N19/593 ,  H04N19/88 ,  H04N19/94

Abstract: A method compresses, into a compressed image signal, an initial image signal including a sequence of pixels having respective amplitudes of plural digital color components. The method includes, for each color component, subdividing the sequence into several groups of several adjacent pixels, and for each group of a portion of the groups, generating a sequenced set of pixels for the group by a monotone sequencing of the pixels of the group as a function of amplitudes of the color component, and approximating amplitudes of the color component of the pixels of the set by a monotone approximation function with one variable related to positions of the pixels in the set. The compressed image signal includes indications of position of the sequenced pixels in the group and characteristics of the approximation function associated with that group.

Abstract translation: 一种方法将包括具有多个数字颜色分量的各自幅度的像素序列的初始图像信号压缩成压缩图像信号。 该方法包括：对于每个颜色分量，将该序列细分为若干相邻像素的几组，并且对于该组的一部分的每组，通过组的像素的单调排序来生成该组的经排序的像素集合 作为颜色分量的幅度的函数，并且通过具有与该组中的像素的位置相关的一个变量的单调近似函数近似该集合的像素的颜色分量的幅度。 压缩图像信号包括组中排序像素的位置的指示和与该组相关联的近似函数的特征。

公开(公告)号：US20150334268A1

公开(公告)日：2015-11-19

申请号：US14811531

申请日：2015-07-28

Applicant: STMicroelectronics (Grenoble 2) SAS

Inventor： Fritz Lebowsky

IPC: H04N1/64 ,  H04N19/176 ,  H04N19/182 ,  G06T7/40 ,  H04N19/186

CPC classification number: H04N1/64 ,  G06T7/90 ,  H04N19/176 ,  H04N19/182 ,  H04N19/186 ,  H04N19/436 ,  H04N19/46 ,  H04N19/593 ,  H04N19/88 ,  H04N19/94

Abstract: A method compresses, into a compressed image signal, an initial image signal including a sequence of pixels having respective amplitudes of plural digital color components. The method includes, for each color component, subdividing the sequence into several groups of several adjacent pixels, and for each group of a portion of the groups, generating a sequenced set of pixels for the group by a monotone sequencing of the pixels of the group as a function of amplitudes of the color component, and approximating amplitudes of the color component of the pixels of the set by a monotone approximation function with one variable related to positions of the pixels in the set. The compressed image signal includes indications of position of the sequenced pixels in the group and characteristics of the approximation function associated with that group.

Abstract translation: 一种方法将包括具有多个数字颜色分量的各自幅度的像素序列的初始图像信号压缩成压缩图像信号。 该方法包括：对于每个颜色分量，将该序列细分为若干相邻像素的几组，并且对于该组的一部分的每组，通过组的像素的单调排序来生成该组的经排序的像素集合 作为颜色分量的幅度的函数，并且通过具有与该组中的像素的位置相关的一个变量的单调近似函数近似该集合的像素的颜色分量的幅度。 压缩图像信号包括组中排序像素的位置的指示和与该组相关联的近似函数的特征。

公开(公告)号：US10390019B2

公开(公告)日：2019-08-20

申请号：US15223294

申请日：2016-07-29

Applicant: STMICROELECTRONICS (GRENOBLE 2) SAS

Inventor： Mariano Bona ,  Fritz Lebowsky

IPC: H04N19/132 ,  H04N19/117 ,  H04N19/172 ,  H04N19/176 ,  H04N19/182 ,  H04N19/105 ,  H04N19/593 ,  H04N19/136 ,  H04N19/85

Abstract: A method of encoding an initial digital signal in an encoded signal, where the initial digital signal includes a sequence of samples representing a multidimensional space, and each sample may be assigned at least one physical magnitude. The method may include, for at least some of the current samples, locally encoding the signal in encoded local digital signals, with the encodings being performed in local reference frames each including the current sample considered and two reference samples. The reference samples may be chosen based upon a minimum gradient of the at least one physical magnitude, from among the available samples of the sequence, and the encoded signal may include the encoded local digital signals.

公开(公告)号：US10313676B2

公开(公告)日：2019-06-04

申请号：US15691221

申请日：2017-08-30

Applicant: STMicroelectronics (Grenoble 2) SAS

Inventor： Mariano Bona ,  Fritz Lebowsky

IPC: H04N19/102 ,  H04N19/103 ,  H04N19/105 ,  H04N19/109 ,  H04N19/11 ,  H04N19/154 ,  H04N19/132 ,  H04N19/196 ,  H04N19/176 ,  H04N19/895 ,  H04N19/182 ,  H04N19/15 ,  H04N19/593

Abstract: A method is provided for encoding an initial digital signal as an encoded signal. The initial digital signal includes a sequence of samples representing a multidimensional space. Each sample is assigned at least one physical quantity. The method includes, for some of the current samples, localized encoding of the signal as encoded local digital signals. The encoded signal includes the encoded local digital signals. The method also includes an on-the-fly analysis of a characteristic associated with the encoded signal, and a direct or indirect adjustment at the sample level, of at least one encoding parameter involved in the localized encodings so as to stabilize the value of the characteristic on a target value to within a tolerance.

公开(公告)号：US10750188B2

公开(公告)日：2020-08-18

申请号：US16412106

申请日：2019-05-14

Applicant: STMicroelectronics (Grenoble 2) SAS

Inventor： Mariano Bona ,  Fritz Lebowsky

IPC: H04N19/154 ,  H04N19/132 ,  H04N19/196 ,  H04N19/176 ,  H04N19/895 ,  H04N19/182 ,  H04N19/15 ,  H04N19/103 ,  H04N19/593

Abstract: A method is provided for encoding a digital signal as an encoded signal. The method includes performing a plurality of localized encodings of a digital signal to generate a set of encoded local signals. Localized encodings are performed for a first sample of the digital signal. A plurality of physical quantities is assigned to the first sample. The set of encoded local signals includes an encoded local signal associated with each physical quantity of the plurality of physical quantities. The method further includes analyzing a characteristic associated with an encoded signal to determine a measured value of the characteristic. The encoded signal includes the set of encoded local signals. The method also includes adjusting a first encoding parameter associated with the plurality of localized encodings according to the measured value of the characteristic and a target value of the characteristic. The first encoding parameter is adjusted for a second sample of the digital signal. The second sample is processed after the first sample.

公开(公告)号：US20180205955A1

公开(公告)日：2018-07-19

申请号：US15691221

申请日：2017-08-30

Applicant: STMicroelectronics (Grenoble 2) SAS

Inventor： Mariano Bona ,  Fritz Lebowsky

IPC: H04N19/154 ,  H04N19/132 ,  H04N19/196 ,  H04N19/176 ,  H04N19/895 ,  H04N19/182

CPC classification number: H04N19/154 ,  H04N19/103 ,  H04N19/132 ,  H04N19/15 ,  H04N19/176 ,  H04N19/182 ,  H04N19/196 ,  H04N19/593 ,  H04N19/895

Abstract: A method is provided for encoding an initial digital signal as an encoded signal. The initial digital signal includes a sequence of samples representing a multidimensional space. Each sample is assigned at least one physical quantity. The method includes, for some of the current samples, localized encoding of the signal as encoded local digital signals. The encoded signal includes the encoded local digital signals. The method also includes an on-the-fly analysis of a characteristic associated with the encoded signal, and a direct or indirect adjustment at the sample level, of at least one encoding parameter involved in the localized encodings so as to stabilize the value of the characteristic on a target value to within a tolerance.

公开(公告)号：US09654784B2

公开(公告)日：2017-05-16

申请号：US14929911

申请日：2015-11-02

Applicant: STMicroelectronics (Grenoble 2) SAS

Inventor： Fritz Lebowsky

IPC: H04N1/41 ,  H04N1/64 ,  H04N19/132 ,  H04N19/186 ,  H04N19/117 ,  H04N19/176 ,  H04N19/44

CPC classification number: H04N19/186 ,  H04N1/41 ,  H04N1/64 ,  H04N1/648 ,  H04N19/117 ,  H04N19/132 ,  H04N19/176 ,  H04N19/44

Abstract: An image includes at least first and second digital samples corresponding to first and second different color components. The image is compressed by detecting level changes of a first signal formed of the sequence of the first samples and by detecting level changes of a second signal formed of the sequence of the second samples. A determination is made as to whether the detected changes coincide with each other. The first signal is decimated. The compressed image that is output includes the decimated first signal, the second signal and a further signal indicative of coinciding detected changes.

公开(公告)号：US20160227223A1

公开(公告)日：2016-08-04

申请号：US14929911

申请日：2015-11-02

Applicant: STMicroelectronics (Grenoble 2) SAS

Inventor： Fritz Lebowsky

IPC: H04N19/186 ,  H04N19/44 ,  H04N19/132 ,  H04N19/117 ,  H04N19/176

CPC classification number: H04N19/186 ,  H04N1/41 ,  H04N1/64 ,  H04N1/648 ,  H04N19/117 ,  H04N19/132 ,  H04N19/176 ,  H04N19/44

Abstract: An image includes at least first and second digital samples corresponding to first and second different color components. The image is compressed by detecting level changes of a first signal formed of the sequence of the first samples and by detecting level changes of a second signal formed of the sequence of the second samples. A determination is made as to whether the detected changes coincide with each other. The first signal is decimated. The compressed image that is output includes the decimated first signal, the second signal and a further signal indicative of coinciding detected changes.

Abstract translation: 图像至少包括对应于第一和第二不同颜色分量的第一和第二数字样本。 通过检测由第一样本的序列形成的第一信号的电平变化并且通过检测由第二样本的序列形成的第二信号的电平变化来压缩图像。 确定检测到的变化是否彼此一致。 第一个信号被抽取。 输出的压缩图像包括抽取的第一信号，第二信号和指示一致检测到的变化的另一个信号。

公开(公告)号：US20190268600A1

公开(公告)日：2019-08-29

申请号：US16412106

申请日：2019-05-14

Applicant: STMicroelectronics (Grenoble 2) SAS

Inventor： Mariano Bona ,  Fritz Lebowsky

IPC: H04N19/154 ,  H04N19/182 ,  H04N19/176 ,  H04N19/895 ,  H04N19/15 ,  H04N19/132 ,  H04N19/103 ,  H04N19/196

Abstract: A method is provided for encoding a digital signal as an encoded signal. The method includes performing a plurality of localized encodings of a digital signal to generate a set of encoded local signals. Localized encodings are performed for a first sample of the digital signal. A plurality of physical quantities is assigned to the first sample. The set of encoded local signals includes an encoded local signal associated with each physical quantity of the plurality of physical quantities. The method further includes analyzing a characteristic associated with an encoded signal to determine a measured value of the characteristic. The encoded signal includes the set of encoded local signals. The method also includes adjusting a first encoding parameter associated with the plurality of localized encodings according to the measured value of the characteristic and a target value of the characteristic. The first encoding parameter is adjusted for a second sample of the digital signal. The second sample is processed after the first sample.