Good and bad classification of Trichosanthes dioica(pointed gourd)

Trichosanthes dioica commonly known as pointed gourd, is a nutritious cucurbit vegetable widely consumed in South Asia. It is valued for its low calorie content and high moisture level, making it suitable for healthy and diabetic-friendly diets. Potol is a good source of dietary fiber, vitamins such as vitamin C and provitamin A (β-carotene), and essential minerals including potassium, magnesium, and iron, which support digestion, immunity, and cardiovascular health.
The standard shelf life of Trichosanthes dioica ( pointed gourd) depends mainly on storage conditions:
At ambient (room) temperature (25–30 °C)
2–3 days . Rapid moisture loss, softening, and microbial spoilage occur due to high respiration rate.
The potol fruits showing green to light green colour with relatively smooth and intact skin represent better-preserved samples, although slight shrivelling and surface dullness suggest moisture loss and advancing senescence. In contrast, the severely deteriorated fruit exhibits orange–yellow discoloration, extensive fungal growth (white mycelium), tissue softening, and surface decay, which are typical symptoms of microbial spoilage and over-ripening. These changes reflect high respiration rate, enzymatic breakdown of tissues, and microbial invasion during prolonged storage. The image clearly demonstrates that after 14 days, potol stored under uncontrolled or suboptimal conditions becomes unacceptable for consumption, confirming its limited shelf life.
Sample collection:-
Fresh and mature fruits of Trichosanthes dioica were collected from local markets of Malda town, West Bengal, India (24°59′N, 88°08′E), and the collection location was mapped using GPS coordinates. Immediately after procurement, the samples were sorted to remove damaged or visibly spoiled fruits. The selected potol samples were first washed thoroughly with normal tap water to remove adhering soil and surface impurities. Digital images of the samples were captured using a smartphone (Vivo Y16) operating on Android version 12 (Funtouch OS 12). The device was equipped with an octa-core processor (2.3 GHz), 4 GB RAM, and 64 GB internal storage.Image acquisition was carried out daily for 14 consecutive days after purchase to monitor visual quality changes and shelf-life deterioration. Approximately 1000 images were captured per day, out of which 71 high-quality images per day were selected based on clarity, focus, and uniform illumination for further analysis. The image dataset was used to study progressive changes in color, texture, surface integrity, and microbial spoilage during storage. This systematic image acquisition protocol enabled continuous non-destructive monitoring of potol quality throughout the storage period.
In this dataset, the bad image folder contains 500 images of Trichosanthes dioica (pointed gourd), and the good image folder also contains 500 images of Trichosanthes dioica (pointed gourd).
Therefore, the total number of images in the dataset is 1000.