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jpeg_encode+decoderhojoon
This is a JPEG encoding & decoding program of still image. It does not use level shifting. Discrete Cosine transform (DCT) is performed both by classical & Chen s Flowgraph methods. Predefined JPEG quantization array & zigzag order are used here. RUN - LEVEL coding is used instead of Huffman coding. Compression ratio is compared for each DCT method. Effect of coarse and fine quantization is also examined. The execution time of 2 DCT methods is also checked. In addition, most energatic DCT coefficients are also applied to examine the effect in MatLab 7.4.0 R2007a. Input is 9 gray scale pictures & output is 9*9=81 pictures to compare. Blocking effect is obvious.
(This is a JPEG encoding & decoding program of still image. It does not use level shifting. Discrete Cosine transform (DCT) is performed both by classical & Chen s Flowgraph methods. Predefined JPEG quantization array & zigzag order are used here. RUN - LEVEL coding is used instead of Huffman coding. Compression ratio is compared for each DCT method. Effect of coarse and fine quantization is also examined. The execution time of 2 DCT methods is also checked. In addition, most energatic DCT coefficients are also applied to examine the effect in MatLab 7.4.0 R2007a. Input is 9 gray scale pictures & output is 9*9=81 pictures to compare. Blocking effect is obvious.
)
- 2009-09-17 13:07:04下载
- 积分：1
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analemma
The program computes and plots the equation of time, the declination, and an analemma curve for various orbital parameters. The analemma is the curve traced by the position of the sun, measured at clock noon, over a year.
- 2013-09-20 14:17:03下载
- 积分：1
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dPe
双极性码元的误比特率计算，画出误比特率曲线。(bipolar symbol of the bit error rate calculation, to give the BER curves.)
- 2007-05-17 18:04:08下载
- 积分：1
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11
说明：
广告流水灯程序
ORG 00H
MOV P2,#80H
START:MOV A,#0FFH 赋初值
CLR C
MOV R2,#8
LOOP:RRC A 带进位右移
MOV P1,A
CALL DELAY
DJNZ R2,LOOP
MOV R2,#7
LOOP1:RLC A 带进位左移
MOV P1,A
CALL DELAY
DJNZ R2,LOOP1
JMP START
DELAY:MOV R3,#20 延时0.2秒
D1: MOV R4,#20
D2: MOV R5,#248
DJNZ R5,$
DJNZ R4,D2
- 2012-11-22 13:22:07下载
- 积分：1
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arrow3
说明： 这个文件可以使用matlab绘制各种带箭头的图。三维或二维的箭头图（矢量图）(This file can use matlab to draw various graphs with arrows. 3-D or 2-D arrow (vector))
- 2019-12-03 16:23:14下载
- 积分：1
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sift-0.9.13.tar
sift的matlab代码，是最新的，效果很不错，大家可以(sift the matlab code, is the latest, the effect is pretty good, we can)
- 2008-04-08 15:34:05下载
- 积分：1
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PWE_1DPhC_Band_structure
平面波展开法计算能带，计算速度快，资源占用少(Plane wave expansion method to calculate the energy band, fast calculation)
- 2021-04-17 16:58:53下载
- 积分：1
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gpops
伪谱法轨迹优化软件工具包，在航空航天轨迹优化、机器人路径优化等领域用途较为广泛(The trajectory optimization software toolkit which is widely used in aerospace trajectory optimization, robot path optimization and other fields.)
- 2018-08-02 18:21:01下载
- 积分：1
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InstallMEX
说明： 辅助小波设计与分析程序辅助小波设计与分析程序辅助小波设计与分析程序(Assisted design and analysis programs wavelet wavelet-assisted design and analysis procedures for wavelet-assisted design and analysis programs)
- 2010-03-26 10:14:08下载
- 积分：1
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mp3readwrite
matlab code for mp3files read and write
- 2014-10-31 15:40:51下载
- 积分：1
