The phrase "a challenging task of" is correct and usable in written English.
It can be used when describing a difficult assignment or responsibility that requires significant effort or skill.
Example: "Completing the project on time was a challenging task of coordinating multiple teams and resources."
Alternatives: "a difficult undertaking of" or "a demanding job of".
Tuning material properties in the 3-D printing process of metallic parts is a challenging task of current interests.
Pattern classification of dermoscopy images is a challenging task of differentiating between benign melanocytic lesions and melanomas.
Such a challenging task of selecting the best network due to the widespread deployment of overlapping wireless networks has been addressed in the literature.
A system which intelligently detects a human from an image or a video is a challenging task of the modern era.
Predicting stock market price is considered as a challenging task of financial time series analysis, which is of great interest to stock investors, stock traders and applied researchers.
A challenging task of volume visualization is the development of efficient algorithms for representing, manipulating and rendering complex and large datasets.
Removing salt and pepper impulse noise (SPN) is an easy task, but removing RVIN of high densities is a challenging task because of the nature of RVIN.
However, real time monitoring of powder bulk density is still a challenging task because of different level of complexities.
However, determining an ideal transfer function is still a challenging task because of the lack of measurable metrics for quality of volume visualization.
The design of catalytic distillation (CD) columns is a challenging task because of the superposition of chemical reaction and distillation in one apparatus.
As the degree of BBB disruption differs from the malignancy of the tumor, treatment of low grade brain tumors is still a challenging task, because of the presence of almost intact BBB.
