91av视频/亚洲h视频/操亚洲美女/外国一级黄色毛片 - 国产三级三级三级三级

  • 大小: 279KB
    文件類型: .rar
    金幣: 2
    下載: 0 次
    發布日期: 2021-05-22
  • 語言: 其他
  • 標簽: jpeg??

資源簡介

壓縮包的內容包括:1.有關JPEG和DPCM算法的文章;2.實現其算法的壓縮程序3.有關圖像壓縮方面的資料。讀者請注意: 這里討論的是灰度圖像的壓縮不涉及彩色圖像。 實現壓縮時,輸入的圖像數據采用一種自定義的格式(com 格式),前四個字節記錄圖像的寬度和高度,之后就是逐 行的圖像數據,圖像的開頭和結尾沒有任何標記。這種格式的圖像數據是從BMP圖像中得到的。 這里沒有JPEG算法的解壓程序,壓縮后的數據存成標準的JPEG文件格式,任何視圖軟件都可以打開。DPCM方法中的解 壓縮程序將數據仍然存成com格式,可以將其轉成PGM格式觀看,壓縮包中由com轉為PGM格式的程序。 所有的C程序均是在Linux(Rethat7.3)下完成。

資源截圖

代碼片段和文件信息

/*This?program?is?wrote?by?Fujian?Shi(fieagle@yahoo.com.cn)*/
/*It?can?transform?the?com?file?to?pgm?file?you?can?watch?the?picture*/
#include?“stddef.h“
#include?“stdio.h“
void?put_measure(FILE?*fileunsigned?int?valchar??th)
{
??int?i=10000temptime=0;
??if?(th?==?0)?i?/=10;?
??while(1)?{
????i/=10;
????temp=val/i;
????if?(temp?>0)
??????time++;
????if(temp>10)?{
??????printf(“Please?increase?the?origin?value?of?inow?it?is?10000.\n“);
??????exit(0);
????}
??if?((time==0)?&&?(temp==0))
?????continue;
??????putc((char)?(temp+48)file);
??if((val-=i*temp)==0)
??????break;
??}
}

main(int?argcchar?*argv[])
{
??#define?UCH(x) ((int)?(x))
??#define?GET_2B(arrayoffset)??((unsigned?int)?UCH(array[offset])?+?\
???????(((unsigned?int)?UCH(array[offset+1]))?<??#define?JFREAD(filebufsizeofbuf)??\
??((size_t)?fread((void?*)?(buf)?(size_t)?1?(size_t)?(sizeofbuf)?(file)))
??#define ReadOK(filebufferlen) (JFREAD(filebufferlen)?==?((size_t)?(len)))
??FILE?*file1*file2;
??char?c1;
??unsigned?int?widthheight;
??int?c2;
??unsigned?char?width_height[4];
??if?((file1=fopen(argv[1]“rb“))==NULL)
????printf(“the?%scan‘t??be?opened“argv[1]);
??if?((file2=fopen(argv[2]“wb+“))==NULL)
????printf(“the?%scan‘t??be?opened“argv[2]);
??if?(!?ReadOK(file1?width_height?4)){
????printf(“error?when?read?the?head?of?file1“);
????exit(0);
??}
??width=GET_2B(width_height0);
??height=GET_2B(width_height2);
??c1=80;
??fputc(c1file2);
??c1=0x35;
??fputc(c1file2);
??c1=10;
??fputc(c1file2);
??/*fputc((char)?48file2);*/
??put_measure(file2width1);
??c1=32;
??fputc(c1file2);
??/*fputc((char)?48file2);*/
??put_measure(file2height1);
??c1=10;
??fputc(c1file2);
??put_measure(file2(unsigned?int)2550);
??fputc((char)?(10)file2);
??while?((c2?=?getc(file1))?!=?EOF)
????putc((char)?(c2)file2);
??fclose(file1);
??fclose(file2);
??return(0);
}



?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件???????1946??2003-07-11?13:51??source_code\com2pgm.c

?????文件?????180350??2007-11-09?00:32??source_code\Debug\com2pgm.exe

?????文件?????184492??2007-11-09?00:32??source_code\Debug\com2pgm.ilk

?????文件???????5575??2007-11-09?00:32??source_code\Debug\com2pgm.obj

?????文件?????175852??2007-11-09?00:32??source_code\Debug\com2pgm.pch

?????文件?????369664??2007-11-09?00:32??source_code\Debug\com2pgm.pdb

?????文件??????33792??2007-11-09?00:32??source_code\Debug\vc60.idb

?????文件??????45056??2007-11-09?00:32??source_code\Debug\vc60.pdb

?????文件???????2633??2003-06-13?15:47??source_code\get_image_data\bmpgray\commondecls.h

?????文件???????2135??2003-03-06?20:43??source_code\get_image_data\bmpgray\jccolor.c

?????文件??????26624??2007-11-22?12:25??source_code\get_image_data\bmpgray\jccolor.doc

?????文件??????13630??2003-07-11?10:13??source_code\get_image_data\bmpgray\rdbmp.c

?????文件??????58368??2007-11-22?12:24??source_code\get_image_data\bmpgray\rdbmp.doc

?????文件????????814??2003-03-04?16:52??source_code\get_image_data\save_com_image\commondecls.h

?????文件??????12386??2003-07-11?10:21??source_code\get_image_data\save_com_image\saveudbmp.c

?????文件????????814??2003-03-04?16:52??source_code\get_image_data\verse_image\commondecls.h

?????文件??????14165??2003-07-11?10:18??source_code\get_image_data\verse_image\rdbmp.c

?????文件??????14085??2003-06-13?16:32??source_code\get_image_data\verse_image\rdbmp.c~

?????文件??????34304??2007-11-20?00:47??source_code\jpeg\commondecls.doc

?????文件???????3870??2003-03-11?22:11??source_code\jpeg\commondecls.h

?????文件??????44032??2007-11-17?10:26??source_code\jpeg\dct.doc

?????文件???????7248??2003-07-11?10:36??source_code\jpeg\jchuff.c

?????文件??????41984??2007-11-20?00:47??source_code\jpeg\jchuff.doc

?????文件???????8151??2003-07-11?10:39??source_code\jpeg\jcmarker.c

?????文件??????52224??2007-11-20?00:48??source_code\jpeg\jcmarker.doc

?????文件???????8195??2007-11-16?22:59??source_code\jpeg\jfdctint.c

?????文件????????498??2003-03-10?18:39??source_code\jpeg\jum.c

?????文件??????24064??2007-11-20?00:49??source_code\jpeg\jum.doc

?????文件???????5633??2003-07-11?10:34??source_code\jpeg\quanhuff.c

?????文件??????40448??2007-11-20?00:46??source_code\jpeg\quanhuff.doc

............此處省略33個文件信息

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