## 1 Introduction  
Aluminum and its alloys are widely utilized metals, ranking second only to steel, owing to its exceptional ductility, robust resistance to corrosion, low density, impressive strength-to-weight ratio, and ability to be recycled. Their applications encompass a wide range of industries, such as aerospace, construction, automotive, and electronics [1, 2, 3, 4]. The smelting and casting process is the first stage in preparing and processing aluminum alloy ingredients. Deep well casting, a type of Direct Chill (DC) casting, is widely employed by the majority of aluminum processing companies in China due to its cost-effectiveness and convenient maintenance [5]. The single-furnace casting process is illustrated in Figure 1. As depicted in the diagram, molten aluminum is transported from the smelting furnace through a channel called a launder to different crystallizers located on the casting mold at high temperatures. A cooling water pump transfers cooling water from the high-level water tank to the cooling water trough of the casting mold with a certain pressure. This allows for heat exchange with the high-temperature aluminum in the crystallizers, resulting in the cooling and solidification of the aluminum into ingots. Concurrently, the dummy plate, propelled by the casting machine, consistently extracts the shaped aluminum ingots from the crystallizers at a constant pace, accomplishing DC casting. When high-temperature aluminum and water come into contact, the substantial temperature disparity causes fast heat transfer, evading a substantial amount of water. The continuous or substantial release of liquid aluminum can result in energy buildup caused by the high-temperature and high-pressure water vapor produced by the interaction of the two-phase fluids. This can lead to a forceful release of steam, which presents a significant danger to the well-being of individuals, the stability of structures, and the ecological surroundings [6]. In the past five years [7], accidents in China related to aluminum processing (deep well casting) have primarily included deep well explosions, electric shocks, scaling, and other incidents. Out of all the incidents, most (53.8%) are caused by deep well explosions due to liquid aluminum leaking. These accidents have resulted in the most severe casualties and property damage. Scholars have primarily concentrated on investigating the processes [8; 9] and conducting risk assessments [10; 11] of aluminum liquid-water contact explosions to study liquid aluminum leaking. The technology for online monitoring of liquid aluminum leakage is currently at its early stage, predominantly dependent on manual experiential judgment and lacking a theoretical foundation. Due to the progress in computer vision and video monitoring technologies, many academics have conducted research in several disciplines. [PERSON] et al. [12] pioneered using infrared thermal imagers to detect liquid aluminum leakage. They introduced a monitoring algorithm that combines infrared image features to effectively detect high-temperature liquid aluminum leakage. Nevertheless, this approach relied on simulated experiments and did not produce a dataset derived from real-world production, hence lacking practical reference value. In addition, it is important to note that in real casting operations, a single manufacturing batch can contain hundreds of ingots. This large number of ingots can create challenges for thermal imaging cameras, as they may not be able to effectively monitor and detect any potential leaks of liquid aluminum, resulting in incomplete detection. Presently, in the realm of aluminum processing (deep well casting), the identification of liquid aluminum leakage predominantly depends on physical examination. Production personnel inspect the casting mold and utilize their expertise to ascertain if any leakage has transpired. This approach requires a significant amount of focus and proficiency from the staff.