It depends on the circumstances and the intention behind sending the nudes. In some cases, it might be, while in other cases there could be other social or psychological forces at work. Because those who send non-consensual explicit images typically have some kind of relationship with the target, it is not a direct analog.
The research on sending nudes focuses primarily on men who send unsolicited nude pictures of themselves (or parts of themselves) to women. While unsolicited nude pictures may be an example of exhibitionism, other factors may play into the act as well, including gender power dynamics, a feeling of entitlement, or an earnest desire to begin a romantic relationship (what some call a “distortion of the normal courtship process”).