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DCT_JPEG
给予matlab的JPEG压缩程序,包含原始压缩图片,程序对灰度bmp图片进行JEPG编码,压缩成以0101形式的编码。JPEG编码先把图象色彩RBG变成亮度Y和色度Cr、Cb,它利用人的视觉对色度不敏感的特点,减少一部分色度数据,以达到压缩。 JPEG采取多种编码方式,包含有行程编码(Run Length Coding)和哈夫曼(Huffman)编码,有很高的压缩比。在编码前,先对数据进行分块,离散余弦变换(DCT)及量化,保留能量大的低频信号,丢弃高频信号以达到压缩。(Given to the JPEG compression matlab program, contains the original compressed image, the program of the grayscale bmp picture JEPG encoded, compressed into a 0101 form of encoding. RBG color coded JPEG image into a first luminance Y and chrominance Cr, Cb, which uses the human visual characteristics is not sensitive to the color, reduce the number of color data to achieve compression. Take a variety of JPEG encoding, includes length coding (Run Length Coding) and Huffman (Huffman) coding, a high compression ratio. In the code before the data block, discrete cosine transform (DCT) and quantization, to retain a large low-frequency signal energy, discarding high-frequency signals in order to achieve compression.)
- 2011-05-16 17:00:59下载
- 积分:1
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vendor
说明: Invensense公司的modm实例代码example。
初始化以及IIC的引用示例。(The example of modm from Invensense.
IIC initiation and configuration initiation.)
- 2019-03-13 14:09:03下载
- 积分:1
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cheliangjishu
这是我的大作业,作用是测试车流量并计数,使用高斯模型对车辆进行定位分割,已验证成功内附测试视频(This is my big job, the role is to test the traffic flow and counting, the use of the Gauss model of the vehicle positioning and segmentation, has been verified successfully included test video)
- 2017-05-05 20:48:16下载
- 积分:1
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sift-0.9.0
说明: sift 图像特征提取算法源码,对研究sift算法很有帮助。(The source code of sift image feature extraction algorithm is very helpful to the research of sift algorithm.)
- 2018-12-25 10:50:31下载
- 积分:1
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JSTEG
Jsteg隐写算法[23][24]由D. Upham提出,该算法将秘密信息嵌入在量化后的DCT系数的LSB上,但值为-1、0、+1的DCT系数例外。提取秘密信息时,也只是将隐藏信息的图像中不等于-1、0、+1的量化DCT系数的LSB取出即可(steganography of jsteg)
- 2021-04-19 23:08:50下载
- 积分:1
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Computergraphics
英文原本经典计算机图形学教程,PPT格式,很好的学习材料和上课资料(English was the classic computer graphics course, PPT format, good learning materials and school information)
- 2009-06-05 19:45:22下载
- 积分:1
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kuanEnhance
结合SAR图像降斑以及频域增强的SAR图像增强技术(a SAR image enhancement method combined with despeckling and enhancement in the frequency domain)
- 2012-04-18 19:02:27下载
- 积分:1
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close all
说明: 小波变化是对傅里叶变换和短时傅里叶变换的一个突破,其改变就在于,将无限长的三角函数基换成了有限长的会衰减的小波。(Wavelet transform is a breakthrough of Fourier transform and short-time Fourier transform. Its change lies in that the infinite trigonometric function base is replaced by the finite attenuation wavelet.)
- 2020-06-26 16:29:04下载
- 积分:1
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FingerPrintDlg
指纹图像处理包括梯度处理、方向场处理、平滑处理、智能增强处理等(The fingerprint image processing including gradient processing, direction field processing, smooth processing and intelligent enhancement processing, etc)
- 2011-04-30 19:28:34下载
- 积分:1
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椭圆拟合
二值化处理图像,自动拟合椭圆并得到长短轴的大小。(Automatically fit the ellipse and get the size of the long and short axes)
- 2021-04-20 15:28:50下载
- 积分:1