1. A method for gas visualization in an infrared (IR) image depicting a scene, the method comprising: receiving a first IR image depicting the scene captured at a first time instance and receiving a second IR image depicting the scene captured at a second time instance; performing image processing operations on image data derived from the first IR image and from the second IR image, to generate a collection of data representing the location of gas in one of the first or second IR image; wherein the image processing operations include: generating a temporal difference image based on the first IR image and the second IR image, performing edge detection in at least one of the first and the second IR image, creating an edge map comprising the detected edge information, wherein the pixels representing detected edge information are assigned a first pixel value and the remaining pixels are assigned a second pixel value, and generating a processed difference image as part of the collection of data by combining the edge map with the temporal difference image such that the detected edge information is removed; and generating a third image by adjusting pixel values in an image depicting the scene, dependent on pixel values of the collection of data.