| 摘要: |
| 针对工程图纸数字图像的特点，对小波包降噪方法中阚值和阈值函数的选择进行了讨论，给出了适合工程图纸数字图像降噪的小波包方法的具体实现步骤。实际应用结果表明，该方法可有效消除图像中的噪声，所选阈值和阈值函数是合理的。 |
| 关键词: 正交小波包变换 工程图纸 降噪方法 阚值选取 |
| DOI：10.11841/j.issn.1007-4333.2003.06.159 |
| 修订日期：2003-01-20 |
| 基金项目:国家自然科学基金资助项目 (10 372 0 36 )，广东省自然科学基金资助项目 (0 2 1197) |
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| Engineering drawings denoising based on orthogonal wavelet packets tranformation |
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| Abstract: |
| A selection method on threshold and threshold function which are used in engineering drawings denoising based on orthogonal wavelet packets transformation was discussed. The corresponding procedure was proposed. The testing result showed that the method proposed on this paper was reasonable, and the selections on threshold and threshold function was reasonable and feasible. |
| Key words: wavelet packets transformation,engineering drawings denoising,the selection of threshold,the threshold function |
