m (size1, size2, non_zeros) 一个压缩矩阵(compressed matrix)，orientation 是列优先(column major)。
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After a series of above-mentioned processing, a Chinese character image can be compressed into an energy measure matrix which includes 15 elements.
经过上述一系列处理后，一个汉字笔迹图像可以被压缩为一个含有15个元素的能量测度矩阵。
Digital image is transformed into singular value matrix that contains non-zero singular values by singular value decomposition (SVD), the image is compressed.
通过对图像进行奇异值分解，将一幅图像转换成只包含几个非零值的奇异值矩阵，实现图像压缩。
A dense matrix arising from MoM can be stored in sparsity after compressed.
一个由矩量法生成的稠密矩阵经过压缩后，可以稀疏存储。
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