A method of detecting arcing between two electrical conductors, the method including: generating an image of the electrical conductors; and with a processor: determining a region of interest in the image closely bounding a pantograph of one of the electrical conductors, and including a point of contact between the electrical conductors in the image; generating a bounding polygon to determine an inner sub-region associated with the region of interest, and an outer sub-region associated with the region of interest, by setting the bounding polygon to encompass the region of interest and using predefined parameters; identifying an arcing candidate captured in the image by determining at least one image component with a high intensity value within the inner sub-region; screening the identified arcing candidate to reject the arcing candidate as a false positive if it is determined: that a number of image components of the image, having a characteristic intensity value, in the inner sub-region, is below a pre-defined threshold, or that if a number of image components of the image, having the characteristic intensity value is present in the outer sub-region, then the number of image components having the characteristic intensity value in the outer sub-region either exceeds the pre-defined threshold or exceeds the number of image components in the inner sub-region having the characteristic intensity value, wherein the characteristic intensity value corresponds to a saturation of a luminance component of relevant image components within the inner sub-region of the image; and if the identified arcing candidate is not rejected, validating that the arcing candidate is an arc by further processing the arcing candidate. generating an image of the electrical conductors; and with a processor: determining a region of interest in the image closely bounding a pantograph of one of the electrical conductors, and including a point of contact between the electrical conductors in the image; generating a bounding polygon to determine an inner sub-region associated with the region of interest, and an outer sub-region associated with the region of interest, by setting the bounding polygon to encompass the region of interest and using predefined parameters; identifying an arcing candidate captured in the image by determining at least one image component with a high intensity value within the inner sub-region; screening the identified arcing candidate to reject the arcing candidate as a false positive if it is determined: that a number of image components of the image, having a characteristic intensity value, in the inner sub-region, is below a pre-defined threshold, or that if a number of image components of the image, having the characteristic intensity value is present in the outer sub-region, then the number of image components having the characteristic intensity value in the outer sub-region either exceeds the pre-defined threshold or exceeds the number of image components in the inner sub-region having the characteristic intensity value, wherein the characteristic intensity value corresponds to a saturation of a luminance component of relevant image components within the inner sub-region of the image; and if the identified arcing candidate is not rejected, validating that the arcing candidate is an arc by further processing the arcing candidate. determining a region of interest in the image closely bounding a pantograph of one of the electrical conductors, and including a point of contact between the electrical conductors in the image; generating a bounding polygon to determine an inner sub-region associated with the region of interest, and an outer sub-region associated with the region of interest, by setting the bounding polygon to encompass the region of interest and using predefined parameters; identifying an arcing candidate captured in the image by determining at least one image component with a high intensity value within the inner sub-region; screening the identified arcing candidate to reject the arcing candidate as a false positive if it is determined: that a number of image components of the image, having a characteristic intensity value, in the inner sub-region, is below a pre-defined threshold, or that if a number of image components of the image, having the characteristic intensity value is present in the outer sub-region, then the number of image components having the characteristic intensity value in the outer sub-region either exceeds the pre-defined threshold or exceeds the number of image components in the inner sub-region having the characteristic intensity value, wherein the characteristic intensity value corresponds to a saturation of a luminance component of relevant image components within the inner sub-region of the image; and that a number of image components of the image, having a characteristic intensity value, in the inner sub-region, is below a pre-defined threshold, or that if a number of image components of the image, having the characteristic intensity value is present in the outer sub-region, then the number of image components having the characteristic intensity value in the outer sub-region either exceeds the pre-defined threshold or exceeds the number of image components in the inner sub-region having the characteristic intensity value, wherein the characteristic intensity value corresponds to a saturation of a luminance component of relevant image components within the inner sub-region of the image; and if the identified arcing candidate is not rejected, validating that the arcing candidate is an arc by further processing the arcing candidate.