A picture becomes porn when it is related to the human body. The particularly female body has a unique advantage for the porn generation. In recent times, search engine giants are concentrating to ban pornography on the internet. Nevertheless, they are clueless about the ground of porn detection. Indeed, you will never find any easy solution to designate a picture as porn stuff. However, it is observed that our visual sense always detects some kinky formation sign in any human body picture.
Over the years, the concept of porn detection in a picture has not been well-developed. Since nobody is interested in it as a serious matter. Practically, porn is related to human psychology and visual acceptance. Pornography is indeed very much popular with the younger generation. However, there is a huge barrier in our society to designate it as an art. I assume that it should designate any naked human figure as porn stuff when the picture is directed to the camera lens and at a 90º angle as well. When any sexual organ is directed towards the camera to attract immediate attention, then you can call it a porn picture. Even, it is observed that posing at a 45° angle a naked human body also generates the porn effect.
Since you are in the porn searching process, your eyes will also behave differently. Because your eye will be more active when you are searching for the porn effect on a picture due to the full 180° movement of the eyeball around the picture, which is searching for the porn effect. Moreover, visual acuity plays a great role in this context. The visual acuity never works with the pixels, but it works with the angles. Therefore, in finding the porn effect in a picture, visual acuity interprets a perfect measurement of a visual angle as well.
Generally, human eyes apply 20/20 visual acuity when deciphering porn effects on an image. Even, it is found that sometimes it crosses over the 20/20 of visual acuity for finding the porn effect in a picture. You should know that the human eye has a resolution of 576 megapixels which is highly respectable for finding details in a picture. When the human vision tries to find the details in a picture, then the human eye puts full 576 megapixels of power for finding the details in a picture like the porn effect.
One thing you should keep in your mind is that a natural nude human body is not directed towards a camera, then it is rather a fine art one. The main purpose of pornography is to arouse an instant erection without gender discrimination. Therefore, anybody can turn on the heat to enjoy it. If you have a sharp observation, then you will see that colours play a vital role in this connection. The reason is that pornographic stuff has a peculiar impact from contrast effect on human perception.
Generally, a contrasting look creates warmth in the pornographic picture. It is almost visible in black and white or colour pictures. For pornography matter, colour can confuse human assumptions through its different hues as well. Therefore, we are decapitated to determine the exact line of the pornographic principle.
Therefore, I think that people of high principle with great acumen will someday invent a real and effective way of pornographic principles for solving this disturbing situation.