Intelligent Watermark (php + gd)

by Mr Me on August 9, 2008 in Downloads, php, php source code

This entry is part 5 of 5 in the series Online Photoshop

Online Photoshop in PHP Part (5) >>

(image after watermarked with gmail logo)

Those who haven’t seen the online photoshop tool created by me, just click here: http://www.sajithmr.com/photoshop

Today we will implement the watermarking on images using php gd library. Intelligent watermarking means, apply a logo or a watermark image on another image by measuring the color depth of the applied image. For this water marking, use png images as logo or watermark for better results.

Live example for watermark implementation: http://sajithmr.com/photoshop-tuts/watermark/addwatermark.php

You can see different watermark location by changing the x1,y1 and x2,y2 parameters of the following url:

http://sajithmr.com/photoshop-tuts/watermark/showresult.php?x1=405&y1=285&x2=520&y2=392&width=115&height=107

See the watermark php source code here: http://sajithmr.com/photoshop-tuts/watermark/watermark.class.txt

Download the full-source code of watermarking implementation using php+gd from here: http://sajithmr.com/photoshop-tuts/watermark.rar

Online Photoshop

3 Comments code, example, gd, live, online, photoshop, php, source, watermark

3 Responses to “Intelligent Watermark (php + gd)”

Marco Pracucci August 31, 2008 at 6:46 pm #

There’s another important problema to solve, related to watermarks, that is place it in a position where it does not hide any important thing. I have proposed a simple algorithm (with its implementation in PHP + IMagick). Feedback is welcome

Reply
ubuh June 17, 2009 at 10:15 am #

thanks for link…

Reply
xacore`u June 3, 2011 at 9:23 am #

You have broken link… please give other link

Reply

About the author

Specialising in PHP, MVC, Agile, LAMP and iPhone Application Development, Sajith has over 5 years experience in the web programming industry during which time he has had his work featured in high profile lists on sites like Mashable. He was a talented and efficient member of the Cyber-Duck programming team, working alongside some of the best in the industry. Co-Founder of MobMe Wireless Pvt Limited, Sajith also has considerable experience in successful business management, having helped to excel the company to become listed as one of the "10 startups to watch in 2008" by the Wall Street Journal and by NASSCOM as one of the "100 most innovative companies in India", joining others like Texas Instruments, Tata Consultancy Services, Satyam and IBM. This technical blog is started three years before which now receives more than 120,000 visits each month and has more than 4000 subscribers.