# US 2014/0193089 A1 · Image processing device and method > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0193089 A1 - Document ID: US20140193089A1 - Status: Published application - Kind: A1 - Application number: 14/344,166 - Filed: 2012-10-25 - Published: 2014-07-10 - Earliest claimed: 2011-11-02 - Assignees: Sony Corporation - Applicants: Sony Corporation - Inventors: Kazushi Sato - Web page: https://patentgrep.com/patent/US20140193089A1 ## CPC - H04N 19/176: the region being a block, e.g. a macroblock - H04N 19/126: Details of normalisation or weighting functions, e.g. normalisation matrices or variable uniform quantisers - H04N 19/463: by compressing encoding parameters before transmission - H04N 19/593: involving spatial prediction techniques - H04N 19/70: characterised by syntax aspects related to video coding, e.g. related to compression standards - H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION ## Abstract The present disclosure relates to an image processing device and a method that can suppress decreases in encoding efficiency. An image processing device of the present disclosure includes: a transform unit that transforms the quantization parameter used in quantization of image data into parameters; and a transmission unit that transmits the parameters generated from the quantization parameter transformed by the transform unit. For example, at the time of encoding of image data, the quantization parameter of the image data is divided by 2 and is transformed into a parameter indicating the quotient and a parameter indicating the remainder, and the parameters are transmitted. The present disclosure can be applied to image processing devices. ## Claims ### Claim 1 An image processing device comprising: a transform unit configured to transform a quantization parameter used in quantization of image data into a plurality of parameters; and a transmission unit configured to transmit the parameters generated from the quantization parameter transformed by the transform unit. ### Claim 2 (depends on 1) The image processing device according to claim 1, wherein the transform unit transforms the quantization parameter into a first quantization parameter and a second quantization parameter. ### Claim 3 (depends on 2) The image processing device according to claim 2, wherein the transform unit sets a quotient obtained by dividing the quantization parameter by 2 as the first quantization parameter, and sets a remainder obtained by the division as the second quantization parameter. ### Claim 4 (depends on 3) The image processing device according to claim 3, wherein the transform unit realizes the division of the quantization parameter through a shift operation. ### Claim 5 (depends on 2) The image processing device according to claim 2, wherein the transform unit further calculates a difference first quantization parameter that is a difference value between the first quantization parameter of a current region being processed and a predicted first quantization parameter that is a predicted value of the first quantization parameter of the current region. ### Claim 6 (depends on 5) The image processing device according to claim 5, wherein the transform unit calculates the predicted first quantization parameter by using the first quantization parameter of an adjacent region of the current region. ### Claim 7 (depends on 6) The image processing device according to claim 6, wherein, when a region adjacent to the left side of the current region is available, the transform unit sets the region adjacent to the left side of the current region as the adjacent region, and, when the region adjacent to the left side of the current region is unavailable, the transform unit sets a region processed immediately before the current region as the adjacent region. ### Claim 8 (depends on 5) The image processing device according to claim 5, wherein the transmission unit encodes the difference first quantization parameter, and transmits the encoded difference first quantization parameter and the second quantization parameter. ### Claim 9 (depends on 1) The image processing device according to claim 1, further comprising a quantization unit configured to quantize the image data, wherein the transform unit transforms the quantization parameter used in the quantization of the image data performed by the quantization unit, into a plurality of parameters. ### Claim 10 (depends on 1) The image processing device according to claim 1, further comprising an encoding unit configured to encode the quantized image data, wherein the transmission unit adds the parameters to encoded data of the image data generated by the encoding unit, and transmits the parameters added to the encoded data. ### Claim 11 An image processing method implemented in an image processing device, the image processing method comprising: transforming a quantization parameter used in quantization of image data into a plurality of parameters, the transforming being performed by a transform unit; and transmitting the parameters generated by transforming the quantization parameter, the transmitting being performed by a transmission unit. ### Claim 12 An image processing device comprising: an acquisition unit configured to acquire a plurality of parameters generated by transforming a quantization parameter used in quantization of image data; and a reconstruction unit configured to reconstruct the quantization parameter by using the parameters acquired by the acquisition unit. ### Claim 13 (depends on 12) The image processing device according to claim 12, wherein the acquisition unit acquires a difference first quantization parameter and a second quantization parameter, the difference first quantization parameter being a difference value between a first quantization parameter generated by transforming the quantization parameter of a current region being processed and a predicted first quantization parameter that is a predicted value of the first quantization parameter, the second quantization parameter being generated by transforming the quantization parameter of the current region, and the reconstruction unit reconstructs the first quantization parameter of the current region by using the difference first quantization parameter of the current region acquired by the acquisition unit, and further reconstructs the quantization parameter of the current region by using the reconstructed first quantization parameter of the current region and the second quantization parameter of the current region. ### Claim 14 (depends on 13) The image processing device according to claim 13, wherein the reconstruction unit calculates the predicted first quantization parameter by using the first quantization parameter of an adjacent region of the current region, and reconstructs the first quantization parameter of the current region by adding the calculated predicted first quantization parameter to the difference first quantization parameter of the current region. ### Claim 15 (depends on 13) The image processing device according to claim 13, wherein the first quantization parameter is a quotient obtained by dividing the quantization parameter by 2, and the second quantization parameter is a remainder obtained by dividing the quantization parameter by 2. ### Claim 16 (depends on 15) The image processing device according to claim 15, wherein the reconstruction unit reconstructs the first quantization parameter of the current region by multiplying the first quantization parameter by 2 and adding the second quantization parameter. ### Claim 17 (depends on 16) The image processing device according to claim 16, wherein the reconstruction unit realizes the multiplication of the quantization parameter through a shift operation. ### Claim 18 (depends on 13) The image processing device according to claim 13, wherein the acquisition unit acquires the difference first quantization parameter by decoding the difference first quantization parameter encoded. ### Claim 19 (depends on 12) The image processing device according to claim 12, further comprising: an inverse quantization unit configured to inversely quantize the quantized image data by using the quantization parameter reconstructed by the reconstruction unit. ### Claim 20 An image processing method implemented in an image processing device, the image processing method comprising: acquiring a plurality of parameters generated by transforming a quantization parameter used in quantization of image data, the acquiring being performed by an acquisition unit; and reconstructing the quantization parameter by using the acquired parameters, the reconstructing being performed by a reconstruction unit.