A high throughput two-dimensional discrete cosine transform and MPEG4 motion estimation using vector coprocessor

Agha, Shahrukh; Gulzari, Usman Ali; Shaheen, Farzana; Jan, Farmanullah

doi:10.1007/s11554-019-00892-9

Cited by 5 publications

(1 citation statement)

References 15 publications

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“…. e core of the two-dimensional discrete cosine transform is separable, so both the forward and inverse transforms can decompose the two-dimensional transform into a series of one-dimensional transforms (rows, columns) for calculation [24,25]. In the MPEG series, since the basic unit of DCT transformation is a luminance block or a chrominance block, the size is 8 × 8, so N � 8 can be used in formula (2), so that…”

Section: Data Structure Of Digital Video Sequencementioning

confidence: 99%

Standardized Judgment Method of Shooting Training Action Based on Digital Video Technology

Guo

Hui

2021

Scientific Programming

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Aiming at the difficulty of standardizing the action of basketball shooting training, a new method of standardizing the action of basketball shooting training is proposed based on digital video technology. The digital video signal representation, video sequence coding data structure, and video sequence compression coding method are analyzed, and the pixels of basketball shooting training action position space are sampled to collect basketball shooting training images. The time difference method is used to extract the movement target of basketball shooting training from a digital video sequence. Based on digital video technology, the initial background image is estimated, and the update rate is introduced to update the background estimation image. According to the pixel value sequence of the basketball shooting training image, the pixel model of the basketball shooting training image is defined and modified. By judging whether the defined pixel value matches the background parameter model, the standardization of shooting training can be realized. The experimental results show that the proposed method has good stability, high precision, and short time in determining the standardization of shooting movement, can correct the wrong shooting movement in real time, and can effectively guide basketball shooting training.

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Section: Data Structure Of Digital Video Sequencementioning

confidence: 99%