Dictionary Learning

本文介绍了一种信号处理方法——字典学习。该方法通过学习过完备字典来表示信号,使得信号能被分解为该字典中基向量的稀疏线性组合。文章还探讨了字典学习在图像去噪和修复等领域的应用。

摘要生成于 C知道 ,由 DeepSeek-R1 满血版支持, 前往体验 >

Many signals and natural images can be represented as a sparse linear combination of basis vectors over an overcomplete dictionary.
Signal samples:
Dictionary <wbr>Learning
Dictionary Learning is solving the following problem:
Dictionary <wbr>Learning
Dictionary <wbr>Learning
Where D is an overcomplete dictionary, A is the projection coefficients of x_i onto the columns of D. It adaptively learns D from the input signal, and make sure the projection coefficients are sparse.

Result
Image denoising:
Dictionary <wbr>Learning Dictionary <wbr>Learning Image inpainting:
Dictionary <wbr>Learning

评论
添加红包

请填写红包祝福语或标题

红包个数最小为10个

红包金额最低5元

当前余额3.43前往充值 >
需支付:10.00
成就一亿技术人!
领取后你会自动成为博主和红包主的粉丝 规则
hope_wisdom
发出的红包
实付
使用余额支付
点击重新获取
扫码支付
钱包余额 0

抵扣说明:

1.余额是钱包充值的虚拟货币,按照1:1的比例进行支付金额的抵扣。
2.余额无法直接购买下载,可以购买VIP、付费专栏及课程。

余额充值