At that time, from 2 to 23, PS was mainly used in graphic design, because digital photography had not been popularized at that time. After 24, with the gradual popularization of digital cameras, especially after the price of SLR cameras gradually fell, the use of PS to process photos began to become more and more popular, and various tutorials and teaching materials became common in the network and bookstores, and various processing techniques came into being, but it was not called P-picture at that time, because the spread of online photos was not popular, and it was only exchanged in some professional photography technology forums. In recent years (after 27-8), with the emergence of smart phones, especially camera phones, and at the same time, online photos are becoming easier to publish, and we can take photos at any time and upload them at any time. At this time, P-pictures have become popular, and both taking photos and P-pictures are no longer the patents of professionals.
Therefore, the processing and modification of network pictures are closely related to the popularization of hardware, the price reduction (camera-SLR camera-camera phone) and the convenience of network application.