I believe that everyone will have some old photos in their home, either from their parents or grandparents, which carry countless precious memories in their hearts. However, these old photos often have a common problem, that is, due to their age and technical limitations of shooting equipment, many old photos will inevitably fade, blur, etc. Therefore, how to effectively improve the image quality of old photos and regain the touching moments of the past has become a topic of major concern to many people.
(OPPO Reno6 Pro)
Thanks to the rapid development and maturity of artificial intelligence, it now also brings surprises to users in the restoration of old photos. For example, OPPO, the leading domestic mobile phone manufacturer, applied for an invention patent titled "Picture Repair Method, Device, Terminal Equipment and Storage Media" as early as June last year. With its advanced technology, it refreshed many people's understanding of the invention. Awareness of old photo restoration. It is worth mentioning that the patent has also disclosed relevant information. Let’s take a look at the highlights and advantages of OPPO’s old photo restoration solution.
According to the data, in order to restore the image quality of old photos, OPPO first inputs the photos to be repaired into a pre-created image repair network model for repair, and the model includes an encoder, a generator and a discriminator. These are also important components of the Generative Adversarial Network (GAN). Through repeated training and optimization of the model, the repaired photos are finally obtained.
It is worth mentioning that the schematic diagram of the overall data flow of the network through the repair model shows that the data flow mainly passes through the encoder, generator and discriminator. The role of the encoder is to encode the input image. , obtain feature maps of several sizes and input them into the generator; the generator reconstructs the input image to obtain a generated image and provides it to the discriminator; while the discriminator combines the generated image with the corresponding high-quality image data set High-quality images are discriminated, and finally the image repair network model is trained based on the discrimination results.
Schematic comparison of old photos before and after restoration (top: before restoration, bottom: after restoration)
It can be seen that OPPO’s picture restoration solution is based on reusing encoders. The feature map takes into account the generation advantages of the generator and the consistency of the image content of the encoder, thereby obtaining a more sophisticated image repair network model to repair the image, which greatly improves the low-quality repair effect of old photos.
(OPPO Reno6 Pro)
Of course, not only the AI ??repair function, OPPO has also launched many unique functions on the ColorOS system. Take the OPPO Reno6 series released not long ago as an example. It is equipped with the latest ColorOS 11.3 system, which provides a wealth of system customization functions. You can customize system fonts, screen display effects, ringtones, icon styles and other components, fully Meet the individual needs of users. In addition, ColorOS also brings Flash Window 2.0, through which users can also improve the parallel processing capabilities of multiple applications in three forms: full screen, small window and mini window. For example, when a user is watching a drama or watching a video, the WeChat chat interface can be displayed on the front desk of the mobile phone through the floating small window mode. In this way, the user can effectively watch the drama and chat at the same time, which can be said to be a multi-purpose solution.
(OPPO Reno6 Pro)
It has to be said that OPPO has indeed brought many convenient and practical technologies to users in recent years. According to public information, as of June 30, 2021, OPPO’s global patent applications exceeded 65,000. Among them, the number of invention patent applications exceeds 58,000, and invention patent applications account for 90% of all applications. In addition, there are more than 2,500 global patent applications in the field of AI, mainly covering aspects such as computer vision, speech technology, natural language processing, and machine learning.
(OPPO Reno6 Pro)
It is not difficult to see from the above that the old photo restoration solution invented by OPPO based on artificial intelligence technology is indeed very difficult. At the same time, we can also see OPPO has quite strong scientific research and innovation capabilities. I believe that in the future, OPPO will continue to delve into the field of innovative technologies and provide users with more "black technology" experiences, which is worth looking forward to.