基于VC++的BMP格式图像与GIF格式图像转换

Conversion from BMP to GIF Format Based on VC++ Environment

探讨了在VC++环境下BMP图像文件与GIF图像文件的转换。首先分析了BMP与GIF2种图像的具体格式,然后在VC++环境下建立自己的函数库文件DIB.H和DIB.CPP,对即将使用的数据成员和函数成员进行初始化,从而实现BMP图像的读取、显示和保存等相关操作。在理解LZW编码算法原理的基础上,在VC++下实现该算法。同时,通过前面建立的BMP图像函数库,调用相关函数,就可以找到相应的具体的图像数据,进而通过LZW编码将BMP图像数据转换成GIF图像数据,实现图像格式的转换。

The conversion from the BMP file into the GIF file in VC ＋ ＋ environment was discussed. These two kinds of image file formats were analyzed first. Then, in the VC ＋ ＋ environment, its own function lib files DIB. H and DIB. CPP were set up to initialize the data members and the function members that will be used. This realizes the related operation of reading and displaying of BMP files. On the basis of understanding the principle of the LZW coding,the algorithm in VC ＋ ＋ environment was realized. By applying the function lib file established above,the corresponding specific image data will be found. In this way, the BMP data can be inverted into GIF format through the LZW coding algorithm,which realizes the conversion of the image format.