15. (1) The copyright in an artistic work shall not be infringed by its inclusion in a cinematograph film or a television broadcast or transmission in a diffusion service, if such inclusion is merely by way of background, or incidental, to the principal matters represented in the film, broadcast or transmission.
(2) The copyright in a work of architecture or in the relevant drawings shall not be infringed by the reconstruction of that work on the same site in the same style as the original.
(3) The copyright in a artistic work shall not be infringed by its reproduction or inclusion in a cinematograph film or a television broadcast or transmission in a diffusion service, if such work is permanently situated in a street, square or a similar public place.
(4) The provisions of section 12 (1), (2), (4), (5) and (12) shall mutatis mutandis apply with reference to artistic works.
16. The provisions of section 12 (1) to (4) inclusive and (12) shall mutatis mutandis apply with reference to cinematograph films.
17. The provisions of section 12 (1) to (5) inclusive and (12) shall mutatis mutandis apply with reference to sound recordings.
18. The provisions of section 12 (1) to (4) inclusive and (12) shall mutatis mutandis apply with reference to broadcasts.
19. (1) The copyright in programme-carrying signals shall not be infringed by the distribution of short excerpts of the programme so carried―
and to the extent justified by the informatory purpose of such excerpts.
(2) The provisions of this section shall not apply with reference to a programme carried by programme-carrying signals representing a sporting event.
20. (1) Notwithstanding the transfer of the copyright in a literary, musical or artistic work or in a cinematograph film, the author shall have the right to claim authorship in the work, subject to the provisions of this Act, and to object to any distortion, mutilation or other modification of the work where such action is or would be prejudicial to the honour or reputation of the author: Provided that an author who authorizes the use of his work in a cinematograph film or a television broadcast may not oppose modifications that are absolutely necessary on technical grounds or for the purpose of commercial exploitation of the work.
(2) Any infringement of the provisions of this section shall be treated as an infringement of copyright under Chapter 2.
21. (1) The copyright conferred by sections 3 and 4 shall vest in the author or, in the case of a work of joint authorship, in the co-authors of the work.
(2) The copyright conferred by section 5 shall initially vest in the state or international organization concerned, and not in the author.
22. (1) Subject to the provisions of this section, copyright shall be transmissible as movable property by assignment, testamentary disposition or operation of law.
(2) An assignment or testamentary disposition of copyright may be limited so as to apply to some only of the acts which the owner of the copyright has the exclusive right to control, or to a part only of the term