Back in 1987, Thomas Knoll was working on his Ph.D. thesis as part of his studies on image processing at the University of Michigan. He had bought a new Apple Mac Plus to help with the thesis, but was frustrated by the fact the computer wouldn't display greyscale images on the monochrome monitor. This issue wouldn't stop him and so he decided to write his own code in order to be able to see the images in his new computer. His brother John was coincidentally working for ILM (Industrial Light and Magic) on image processing at the time and discovered Thomas' code during a holiday visit. Clearly impressed by his brother's achievements, both began collaborating on a bigger application which they named Display. Shortly after buying a color Macintosh II, John asked Thomas to re-write Display for color images. Thomas was happy to obligue: soon he would develop new features such as levels, color balance and hue and saturation controls, as well as what would later become plug-ins in addition to gamma correction and options to save in other file formats. Display was renamed Image Pro in 1988 and the two brothers decided it was time to try and sell it to the public. During the process of searching for investors, the software changed names to Photoshop. However, no one is entirely sure of how this came to be. Adobe was the only company showing any interest in Photoshop, but unfortunately a working deal was not feasible at the time. However, the brothers managed to get a short term deal with a scanner manufacturer and bundled their software with the scanners under the name Barneyscan XP. John went back to Adobe where Russell Brown, Art Director at the time, was really impressed with Photoshop and convinced the company to take it on. Photoshop was released on its first version in February 1990.