jpeg header info

In the Linux based video surveillance acquisition system, the camera captured a frame of video image data are generally hardware automatically compressed into the JPEG format, and then saved to the camera device buffer. If you want to display the

0x00 PrefaceContinue to learn the art of steganography, this time to learn and understand the JPEG file format. Compared with the PNG file format, the JPEG file is relatively simple, the way to read the hidden payload is similar, the difference

Reading Exif information requires a simple understanding of JPEG and Exif formats. JEGP format please view cloud wind Article http://blog.csdn.net/glock18/archive/2004/09/05/95268.aspx Exif format please check the article http://dev.csdn.net/article/

Summary of HTTP protocol and common methods used by headers in PHP, and Header summary. Summary of the HTTP protocol and common methods used by the Header in PHP. the header summary examples in this article summarize the HTTP protocol and common

Summary of HTTP protocol and common methods used by headers in PHP, and Header Summary This example summarizes the HTTP protocol used by the Header in PHP and common methods. Share it with you for your reference. The specific method is as

PHP file type verification class function based on the file header. I wrote a verification class here to determine the file format through the file header. (It is not secure. if the user spoofs the file header, it can also pass verification.) copy

I've written a validation class here that uses the file header to determine the file format. (also not completely secure, if the user forged the file header, can also be verified) Copy CodeThe code is as follows: /** * Type of document to be

In PHP development, the traditional file Upload type verification method is based on the file extension (such as the pathinfo function), it is easy to modify the extension to deceive me to write a verification class here, determine the file format

I've written a validation class here that uses the file header to determine the file format. (also not completely secure, if the user forged the file header, can also be verified) Copy the Code code as follows: /*** Type of document to be checked*

I wrote a verification class here to determine the file format through the file header. (It is not secure. If the user spoofs the file header, it can also pass verification) Copy codeThe Code is as follows: /** * Document Type * * @ Author Silver */