Image Signal Processors (ISP) are the data processing block inside both still and video cameras that convert the raw output of the camera's image sensor(s) to the pictures and video that we are familiar with.
While ISPs were originally implemented using digital signal processors (DSPs), the high-performance video standards of today demand custom hardware blocks for this function. The downside is that only the highest volume markets can justify custom dedicated hardware. As a result, modern ISPs are now just a sub-module of an overall system controller, also known as application-specific standard processors (ASSPs). These ASSPs are typically intended for high-volume applications such as cell phone or sport cameras.
However, differentiating your product over your competition will be impossible when using these ASSPs because your competitors have access to the same devices. Xilinx programmable SoCs, such as Zynq and Zynq Ultrascale+, have all the resources required to implement customized and optimized high-performance, state-of-the-art ISPs as well as many, if not all, of the other processing and control functions that your application may require.
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