Worked on the opencv/opencv repository to address a critical bug in the RISC-V Vector Extension reductions, focusing on stabilizing test outcomes across diverse RVV hardware. Using C++ and vector programming expertise, implemented a switch from tail-agnostic to tail-undisturbed policy in reduction operations, which preserved tail elements and prevented accumulator corruption and NaN propagation. This patch resolved persistent test failures in opencv_test_core and opencv_test_imgproc, resulting in reliable validation on both physical hardware and QEMU-based emulation. The work enhanced continuous integration reliability and improved OpenCV’s portability, demonstrating strong skills in testing, cross-architecture validation, and low-level vector intrinsic handling.