Debugging the three modules HiMPP, ISP, and NPU together is indeed not an easy task. Many teams discover midway through a project that it is easy to get each module working individually, but once they are connected, all sorts of strange problems arise: incorrect image colors, unstable AI inference results, frame drops, or fluctuating latency. At this point, what is most needed is someone with real mass-production experience, not just an engineer who only understands theoretical parameter tuning.
Those who have truly done joint debugging know that the problems often lie in the interfaces and timing. For example, whether HiMPP's buffer management matches the ISP's output format, or whether the preprocessing of NPU input data is occupying ISP bandwidth. Without someone to coordinate and sort out these details, it is easy to fall into a cycle of repeated trial and error. What makes it even more troublesome is that the logging and error-reporting mechanisms of the three modules are completely different. Simply locating the problem to a specific layer can take several days.
Therefore, finding a developer for this issue is essentially about finding someone who can view the three frameworks as a unified whole. Such a team usually has a track record of delivering complete projects on HiSilicon platforms, is familiar with low-level SDK calls, and has built full pipelines from sensor input to NPU inference on actual hardware. They will not just tweak a single parameter for you; instead, they will make trade-offs at the system level—such as adjusting the ISP's RGB order to match the NPU's input requirements, or using the VPSS channel of HiMPP to directly connect to the NPU, thereby saving unnecessary memory copies.
In addition, joint debugging often requires on-site code modifications. Remote support is usually inefficient, so it is best to find a local team that can bring equipment directly to your company and debug together with you. They should also be able to help optimize performance, after all, the ultimate goal of joint debugging is not just to make it run, but to make it run stably. If the other party can provide complete test reports and issue-tracking records, that is even more reliable.
In short, when choosing a partner, do not just look at the quotation. Check whether they have stepped on pitfalls and whether they have real hands-on ability. A good joint debugging development team can turn vague error messages into clear solutions in your already hectic project, and transform the modules from working in isolation to working in coordination. If you happen to be facing a similar dilemma, it is worth talking to engineers who have practical experience.