Abstract: A method for preparing 3,3?,4,4?-dicyclohexyltetracarboxylic acid and a method for treating an acidic wastewater are provided. In the preparation method according to the present disclosure, a ruthenium-rhodium mixed catalyst is used to catalyze the hydrogenation reduction reaction, which improves the selectivity of the reaction and reduces the generation of isomers, thereby reducing the generation of by-products and increasing the purity of 3,3?,4,4?-dicyclohexyltetracarboxylic acid. The results of the examples show that the purity of 3,3?,4,4?-dicyclohexyltetracarboxylic acid prepared by the method according to the present disclosure is not less than 99.62%.

Abstract: Provided are an integrated super-resolution laser direct-writing device and a direct-writing method. The integrated super-resolution laser direct-writing device includes a first continuous laser, a first optical fiber coupler, a mono-mode optical fiber, a second continuous laser, a second optical fiber coupler, a first annular photonic crystal fiber, a bifurcated optical fiber, a lens group, a first dichroic mirror, an LED light source, a lens, a second dichroic mirror, an auto-focusing module, a third dichroic mirror, a third optical fiber coupler, a square-law graded index fiber, a nanometer displacement table, a second lens, a CMOS camera and a control system. According to the present invention, an original large direct-writing device based on a free optical path can achieve optical fibers of key devices and integration of systems and can be better applied to the field of laser direct-writing.

Abstract: Provided are an integrated super-resolution laser direct-writing device and a direct-writing method. The integrated super-resolution laser direct-writing device includes a first continuous laser, a first optical fiber coupler, a mono-mode optical fiber, a second continuous laser, a second optical fiber coupler, a first annular photonic crystal fiber, a bifurcated optical fiber, a lens group, a first dichroic mirror, an LED light source, a lens, a second dichroic mirror, an auto-focusing module, a third dichroic mirror, a third optical fiber coupler, a square-law graded index fiber, a nanometer displacement table, a second lens, a CMOS camera and a control system. According to the present invention, an original large direct-writing device based on a free optical path can achieve optical fibers of key devices and integration of systems and can be better applied to the field of laser direct-writing.

Abstract: A technique for semantic video compression is shown in block (120). Uncompressed video data (210), including a plurality of video data segments (S1, S2, . . . Sn), are organized into two or more buffer slots (220), such that each of the two or more buffer slots is filled with one or more of the received video data segments, thereby forming two or more buffered video portions corresponding to the two or more buffer slots. The buffered video data is then processed by a leaking rule, to extract one or more buffered video portions, while outputting one or more non-extracted buffered video portions, as compressed video data (230). The leaking rule data is stored in a histogram (240) and later used to organize and index data according to a users request.

Abstract: A method for selecting a subsequence of video frames (72-84) from a sequence of video frames (70) comprising defining a distance function between video frames (72-84) in the sequence of video frames (70). An optimization criterion is defined to express a feature of a plurality of subsequences of video frames (72-84) selected from the sequence of video frames (70). A method is disclosed for displaying key frames for browsing and streaming.

Abstract: A technique for semantic video compression is shown in block (120). Uncompressed video data (210), including a plurality of video data segments (S1, S2, . . . Sn), are organized into two or more buffer slots (220), such that each of the two or more buffer slots is filled with one or more of the received video data segments, thereby forming two or more buffered video portions corresponding to the two or more buffer slots. The buffered video data is then processed by a leaking rule, to extract one or more buffered video portions, while outputting one or more non-extracted buffered video portions, as compressed video data (230). The leaking rule data is stored in a histogram (240) and later used to organize and index data according to a users request.

Abstract: A technique for semantic video compression is shown in block (120). Uncompressed video data (210), including a plurality of video data segments (S1, S2, . . . Sn), are organized into two or more buffer slots (220), such that each of the two or more buffer slots is filled with one or more of the received video data segments, thereby forming two or more buffered video portions corresponding to the two or more buffer slots. The buffered video data is then processed by a leaking rule, to extract one or more buffered video portions, while outputting one or more non-extracted buffered video portions, as compressed video data (230). The leaking rule data is stored in a histogram (240) and later used to organize and index data according to a users request.

Abstract: A technique for semantic video compression is shown in block (120). Uncompressed video data (210), including a plurality of video data segments (S1, S2, . . . Sn), are organized into two or more buffer slots (220), such that each of the two or more buffer slots is filled with one or more of the received video data segments, thereby forming two or more buffered video portions corresponding to the two or more buffer slots. The buffered video data is then processed by a leaking rule, to extract one or more buffered video portions, while outputting one or more non-extracted buffered video portions, as compressed video data (230). The leaking rule data is stored in a histogram (240) and later used to organize and index data according to a users request.

Abstract: A method for selecting a subsequence of video frames (72-84) from a sequence of video frames (70) comprising defining a distance function between video frames (72-84) in the sequence of video frames (70). An optimization criterion is defined to express a feature of a plurality of subsequences of video frames (72-84) selected from the sequence of video frames (70). A method is disclosed for displaying key frames for browsing and streaming.