Shanghai Bilibili Technology Co., Ltd.

Shanghai Marine Diesel Engine Research Institute

General Electric Company

Shanghai Jiaotong University

Xiaobo Li

Tianxiao Ye

Teng Shen

Qiuyan Chen

Xiangli Zhu

Yi Lu

Feng Chen

Xinmin Lai

Linfa Peng

Zhenhua Wang

Peiyun Yi

Lili Shi

Xizhao Zhang

Wenjie Kong

Yuanyuan Huang

Feixiang Shen

Ko-Chih Liu

Mingsai Du

Diankai Qiu

Zhigang Wang

Mingshan Guo

Zhipeng Hou

The present disclosure provides an image processing method and apparatus, a device, and a medium, and relates to the field of image and video processing technologies. An implementation solution includes: performing frequency domain transform on a target image and obtaining a frequency coefficient matrix of the target image, the frequency coefficient matrix including at least one non-zero frequency coefficient; determining a non-zero block in the frequency coefficient matrix based on a position of the at least one non-zero frequency coefficient; determining a corresponding transform submatrix and a corresponding transposed submatrix of the non-zero block; and determining an inverse transform result of the frequency coefficient matrix based on the transform submatrix, the non-zero block, and the transposed submatrix.

Image processing method and apparatus, electronic device, and storage medium

Techniques for data processing in an edge offset mode of sample adaptive offset are provided. The techniques include: traversing reconstructed pixels in a coding tree block, and calculating a residual value between each reconstructed pixel and original pixel; traversing all first reconstructed pixels in a non-boundary part of the coding tree block, and calculating a category of each traversed first reconstructed pixel in each direction; traversing all second reconstructed pixels in a boundary part of the coding tree block, and calculating a category of each traversed second reconstructed pixel along a single direction; and calculating an accumulated residual value of reconstructed pixels along the four directions and an accumulated number of reconstructed pixels under the category based on the category of each first reconstructed pixel the edge offset modes along the four directions, the category of each second reconstructed pixel along the single direction, and each residual value.

Data processing in edge offset mode of sample adaptive offset

A method for determining a sample adaptive offset mode includes: obtaining a motion vector included in a first coding tree block, and obtaining a reference frame of a video frame of the first coding tree block; obtaining a video resolution and a frame rate, calculating a threshold based on the video resolution and the frame rate; if it is determined that the motion vector is not greater than the threshold, determining a second coding tree block based on the motion vector; determining whether an offset mode is trusted; and if the offset mode is trusted, obtaining offset modes of all second coding blocks, and using obtained all types of offset modes as offset modes of the first coding tree block.

Determination of sample adaptive offset mode of coding tree block

A method, a device, and a medium are provided. The method includes: obtaining a residual of each of a plurality of target pixels of a target image, the residual being represented by a first preset number of bits; and modifying, in response to determining that the plurality of residuals are within a preset value range, each of the plurality of residuals to be represented by a second preset number of bits.

Sample adaptive offset

A method and an apparatus for sample adaptive offset, a device, and a medium are provided. An implementation is: obtaining a band value and a residual of each pixel in a target image; selecting a plurality of adjacent target pixels from the target image; and performing band information calculation operation for the plurality of adjacent target pixels, the band information calculation operation including: obtaining a maximum band value and a minimum band value of the plurality of target pixels; determining a plurality of preset band values based on the maximum band value and the minimum band value; and calculating band information for each of the plurality of preset band values based on the band values and the residuals of the plurality of target pixels.

A high-pressure SCR system with venting and pressure-stabilizing for marine diesel engine, comprising an SCR reactor, a gas intake pipeline, an exhaust pipeline, a bypass pipeline, a pneumatic pipeline, first and second auxiliary pipelines When denitrification treatment is needed, the exhaust gas can enter from a flue gas inlet, sequentially pass through the gas intake pipeline, the SCR reactor, and the exhaust pipeline, and be discharged from a flue gas outlet. When denitrification treatment is not needed, the exhaust gas can enter the bypass pipeline from the flue gas inlet and be discharged from the flue gas outlet, the exhaust gas in the SCR reactor and exhaust pipeline being pushed by compressed air entering from the first and second auxiliary pipelines to be discharged from the flue gas outlet. Also provided is a ship.

High-pressure SCR system with venting and pressure-stabilizing for marine diesel engine and ship having the same

The invention relates to a graphite micro-crystalline carbon coating for metal bipolar plates of fuel cells and an application thereof. The graphite micro-crystalline carbon coating is a graphite-like coating deposited on the surface of a metal bipolar plate, includes, by weight, 5%-50% of graphite micro-crystals, and has good compactness. Based on conventional magnetron sputtering technologies, the energy of deposited particles is changed by changing a target sputtering power source, the intensity of a sputtering magnetic field and the deposition temperature of the coating to change the structure of the carbon coating, so that the carbon coating with high conductivity, corrosion resistance, and stability is prepared. Compared with the prior art, under a precondition where the preparation cost of the coating is not increased, the contact resistance of the metal bipolar plate of a fuel cell and a gas diffusion layer can be reduced, and the corrosion resistance of the carbon coating in an acidic environment of the fuel cell and the conductive stability of the carbon coating after a long-time test can be improved, which is of great significance for promoting the commercialization of fuel cells.

Graphite micro-crystalline carbon coating for metal bipolar plates of fuel cells and application thereof

A reaction device of a marine SCR system comprises a conveying unit (), a reaction chamber (), at least one catalyst module (), and an air homogenization chamber (), wherein, the conveying unit () includes an input pipeline () and an output pipeline () sleeved outside the input pipeline (). One end of the reaction chamber () is connected to the conveying unit (). The reaction chamber () comprises an inner cylinder () and an outer cylinder () sleeved outside the inner cylinder (), the inner cylinder () is in communication with the input pipeline (), and the outer cylinder () is in communication with the output pipeline (). The catalyst module () is provided between the inner cylinder () and the outer cylinder (). The air homogenization chamber () is connected to the other end of the reaction chamber () and is in communication with both the inner cylinder () and the outer cylinder (). With the reaction device of the marine SCR system whereby the outer cylinder is sleeved outside the inner cylinder, flue gas from the inner cylinder is turned by the air homogenization chamber and then flows back into the outer cylinder. This can not only substantially reduce the size of the reaction device to improve the integration of the SCR system, but also allow the flue gas to turn in the air homogenization chamber and then flow back, so that the flue gas and a reducing agent can be fully mixed in the air homogenization chamber to improve the catalytic reaction efficiency.

Reaction device of marine SCR system

A diesel engine high pressure SCR ventilation and voltage stabilisation system, comprising an SCR reactor (), an air intake pipeline () and an exhaust pipeline () respectively connected to an air inlet and an exhaust outlet of the SCR reactor, a pressure difference sensing apparatus (), and a control apparatus, a first control valve () being arranged on the air intake pipeline () and a second control valve () being arranged on the exhaust pipeline (), and the control apparatus being connected to the pressure difference sensing apparatus (), the first control valve (), and the second control valve (). The control apparatus controls the first and second control valves such that the pressure difference between the SCR reactor and the exhaust side of the diesel engine remains in a predetermined pressure difference range. The present system implements rapid ventilation and ensures precise control and stabilisation of pressure difference.

Diesel engine high pressure SCR ventilation and pressure stabilization system

A system, method and computer program product are disclosed that enable providing processing instructions for updating schema. In one embodiment, the method includes obtaining an updated schema that includes an updated version of a previous schema; identifying a difference between the updated schema and the previous schema; processing the difference to create processing instructions; and providing the processing instructions for implementation into a logical processor, wherein the logical processor processes data defined using the updated schema.

Growing community of inventors

Shanghai, China

Xiaobo Li