178:, who asked Asmus if he could make holograms of statues and art objects in Venice in order to preserve them. Through this process, Asmus discerned that he could use lasers to remove detritus encrusting the statues without harming the underlying works. In 1972, Asmus "first applied laser cleaning to marble sculptures", and therefore "is considered to be the grandfather of laser art conservation". That same year, Asmus worked with holography pioneer Ralph Wuerker, with whom he "proved the feasibility of creating full-size holograms of statuary, permitting three-dimensional reproductions of the world's sculptural masterpieces". Asmus continued working with Munk to create a three-dimensional record of the city of
245:
to examine images of the painting to determine how the colors would appear if they were not distorted by the yellowing of the aged varnish. By 1987, Asmus had discovered previously unknown evidence indicating that the subject had originally been painted with a necklace, which had apparently then been
259:, finding that they shared a signature frequency of degrees of lightness and darkness, which Asmus concluded indicated that the examined aspects of both paintings were painted by the same person. During this same period, Asmus also developed a plan to restore the Qin dynasty
219:
building that had been repeatedly painted over since a 1939 remodeling, ultimately removing nine layers of paint to restore the original artwork. In 1980, after vandals attempted to use an abrasive kitchen cleanser to deface ancient
237:. In the 1980s, Asmus "turned a personal fascination with the Mona Lisa into a five-year project to recapture the painting's original vitality". Pedretti had proposed that Leonardo had originally painted the
241:
bare-breasted, and Asmus believed that he could determine whether this theory was correct, "using computer image enhancement techniques developed for interpreting satellite photographs". Asmus used
246:
painted over by
Leonardo. Asmus also determined that restorers had obscured mountains originally appearing in the background of the portrait, likely in order to emphasize foreground features.
690:
680:
294:, with the trio publishing the results of scientific examinations that established to their satisfaction that the same artist painted the face of both the
685:
104:
Asmus is widely published, with over 125 articles published in professional journals and 25 patents to his name. Having received his PhD from the
231:
His application of complex scientific devices to art enabled Asmus to work on many of the world's most famous cultural objects, including the
98:
74:
117:
105:
48:
363:
612:
191:
228:
in Utah, Asmus was called in to use his technology to repair the damage, and "succeeded in removing most of the cleanser".
628:
276:
532:
John F. Asmus, "Computer
Studies of the Isleworth and Louvre Mona Lisas", in T. Russell Hsing and Andrew G. Tescher,
133:
242:
568:
Asmus, John F.; Parfenov, Vadim; Elford, Jessie (28 November 2016). "Seeing double: Leonardo's Mona Lisa twin".
216:
141:
129:
485:
440:
302:. In 2018, Asmus and Parfenov published findings on the application of the same technology to portraits by
675:
651:
412:
397:
382:
670:
225:
145:
287:
291:
251:
585:
125:
608:
199:, at times referred to as "The Lost Leonardo", believed to be hidden beneath one of the later
196:
577:
463:
94:
136:
in art conservation, working to preserve or investigate works as diverse as the statues in
367:
268:
260:
208:
204:
153:
113:
186:
97:. As of 2020, he taught at the Institute for Pure and Applied Physical Science at the
664:
652:"Characterization of Rembrandt self-portraits through digital-chiaroscuro statistics"
589:
109:
272:
185:
In 1975, Asmus developed "supersensitive sonar detectors" to assist art historian
182:
in 1973, while continuing to investigate means of using lasers to clean statuary.
322:
175:
249:
In 1988, Asmus published his results from using this technology to compare the
581:
221:
121:
344:
Mary S. Rauch, "The Newest in
Science is Working To Save the Oldest in Art",
458:
Spie (2014). "John Asmus: Optical techniques and the mysterious Mona Lisa".
303:
233:
162:
149:
90:
467:
264:
212:
157:
200:
179:
137:
550:
534:
Selected Papers on Visual
Communication: Technology and Applications
536:(SPIE Optical Engineering Press, 1990), p. 652-656; reprinted from
519:
Kristine Moe, "Expert plans facelift for ancient
Chinese artwork",
215:. In 1978, Asmus used laser technology to uncover artwork in the
364:"LACONA VII Proceedings: Lasers in the Conservation of Artworks"
93:
who has focused his work on the use of scientific techniques in
120:
nuclear spaceship program. Asmus then pioneered the use of
267:, China, and to piece together a Renaissance fresco by
279:
for his conservation work on the terracotta warriors.
650:
Asmus, John F.; Parfenov, Vadim (December 28, 2018).
108:, he initially applied his knowledge of high-energy
515:
513:
511:
70:
55:
44:
36:
28:
21:
555:Rolex Awards for Enterprise : Profiles in A-F
497:
495:
629:"New proof said found for "original" Mona Lisa –"
325:. UC San Diego - Center for Advanced Nanoscience.
410:Everett Holles, "Search For a Lost da Vinci",
8:
501:"Analysis of Mona Lisa turns up surprises",
170:Pioneering use of lasers in art conservation
59:Pioneering use of lasers in art conservation
691:University of California, San Diego faculty
18:
681:California Institute of Technology alumni
607:. Cannes, France: Edition de l'Omnibus.
366:. eConservation Magazine. Archived from
112:in private sector organizations such as
483:Mark Roth, "Uncovering the Mona Lisa",
479:
477:
340:
338:
336:
334:
332:
314:
380:"Laser Photography May Preserve Art",
540:, Vol. 28(7) (July 1989), p. 800-804.
7:
189:and other scientists searching for
99:University of California, San Diego
75:University of California, San Diego
603:Boudin de l'Arche, Gerard (2017).
207:(Hall of the Five Hundred) in the
106:California Institute of Technology
101:, where he began working in 1974.
49:California Institute of Technology
14:
323:"People - John Asmus - Brief Bio"
174:In 1971, Asmus met oceanographer
686:21st-century American physicists
654:. Journal of Cultural Heritage.
631:. Reuters.com. 13 February 2013
570:Optical and Quantum Electronics
441:"John Fredrich Asmus: Project"
116:, where he contributed to the
1:
551:"Rolex Awards for Enterprise"
362:Bordalo, Rui (June 4, 2009).
605:A la recherche de Monna Lisa
282:In 2016 Asmus revisited the
445:Rolex Awards for Enterprise
439:de Leschery, Karen (2001).
425:"Laser finds Capitol art",
401:(September 2, 1973), p. 30.
32:1937 (age 86–87)
707:
523:(December 8, 1987), p. 27.
134:nuclear magnetic resonance
89:(born 1937) is a research
582:10.1007/s11082-016-0799-0
521:Hazleton Standard-Speaker
416:(August 10, 1975), p. 19.
275:. In 1990, he received a
243:computer image processing
80:
63:
429:(April 26, 1978), p. 26.
386:(March 31, 1972), p. 36.
346:Newport News Daily Press
271:shattered by bombing in
217:California State Capitol
144:, petroglyphs in Utah's
142:California State Capitol
130:digital image processing
486:Pittsburgh Post-Gazette
489:(March 2, 1987), p. 1.
413:San Francisco Examiner
398:San Francisco Examiner
277:Rolex Enterprise Award
205:Salone dei Cinquecento
192:The Battle of Anghiari
505:(May 20, 1996), p. 5.
395:"A Benevolent Beam",
383:The Indianapolis Star
348:(December 28, 1980),
195:, a lost painting by
468:10.1117/2.3201403.08
427:The Berkeley Gazette
226:Arches National Park
146:Arches National Park
538:Optical Engineering
300:Isleworth Mona Lisa
284:Isleworth Mona Lisa
252:Isleworth Mona Lisa
87:John Fredrich Asmus
140:, frescoes of the
126:ultrasonic imaging
16:American physicist
197:Leonardo da Vinci
160:, China, and the
84:
83:
65:Scientific career
698:
656:
655:
647:
641:
640:
638:
636:
625:
619:
618:
600:
594:
593:
565:
559:
558:
547:
541:
530:
524:
517:
506:
499:
490:
481:
472:
471:
455:
449:
448:
436:
430:
423:
417:
408:
402:
393:
387:
378:
372:
371:
370:on May 22, 2009.
359:
353:
342:
327:
326:
319:
286:with professors
95:art conservation
19:
706:
705:
701:
700:
699:
697:
696:
695:
661:
660:
659:
649:
648:
644:
634:
632:
627:
626:
622:
615:
602:
601:
597:
567:
566:
562:
549:
548:
544:
531:
527:
518:
509:
503:Indiana Gazette
500:
493:
482:
475:
457:
456:
452:
438:
437:
433:
424:
420:
409:
405:
394:
390:
379:
375:
361:
360:
356:
343:
330:
321:
320:
316:
312:
269:Andrea Mantegna
261:Terracotta Army
255:and the Louvre
209:Palazzo Vecchio
172:
154:Terracotta Army
148:, portraits by
114:General Atomics
45:Alma mater
24:
17:
12:
11:
5:
704:
702:
694:
693:
688:
683:
678:
673:
663:
662:
658:
657:
642:
620:
613:
595:
560:
542:
525:
507:
491:
473:
450:
431:
418:
403:
388:
373:
354:
328:
313:
311:
308:
288:Vadim Parfenov
187:Carlo Pedretti
171:
168:
110:excimer lasers
82:
81:
78:
77:
72:
68:
67:
61:
60:
57:
56:Known for
53:
52:
46:
42:
41:
38:
34:
33:
30:
26:
25:
22:
15:
13:
10:
9:
6:
4:
3:
2:
703:
692:
689:
687:
684:
682:
679:
677:
676:Living people
674:
672:
669:
668:
666:
653:
646:
643:
630:
624:
621:
616:
614:9791095833017
610:
606:
599:
596:
591:
587:
583:
579:
575:
571:
564:
561:
556:
552:
546:
543:
539:
535:
529:
526:
522:
516:
514:
512:
508:
504:
498:
496:
492:
488:
487:
480:
478:
474:
469:
465:
461:
460:SPIE Newsroom
454:
451:
446:
442:
435:
432:
428:
422:
419:
415:
414:
407:
404:
400:
399:
392:
389:
385:
384:
377:
374:
369:
365:
358:
355:
351:
347:
341:
339:
337:
335:
333:
329:
324:
318:
315:
309:
307:
305:
301:
297:
293:
292:Jessie Elford
289:
285:
280:
278:
274:
270:
266:
262:
258:
254:
253:
247:
244:
240:
236:
235:
229:
227:
223:
218:
214:
210:
206:
202:
198:
194:
193:
188:
183:
181:
177:
169:
167:
165:
164:
159:
155:
151:
147:
143:
139:
135:
131:
127:
123:
119:
115:
111:
107:
102:
100:
96:
92:
88:
79:
76:
73:
69:
66:
62:
58:
54:
50:
47:
43:
39:
35:
31:
27:
23:John F. Asmus
20:
645:
633:. Retrieved
623:
604:
598:
573:
569:
563:
554:
545:
537:
533:
528:
520:
502:
484:
459:
453:
444:
434:
426:
421:
411:
406:
396:
391:
381:
376:
368:the original
357:
349:
345:
317:
299:
295:
283:
281:
273:World War II
256:
250:
248:
238:
232:
230:
190:
184:
173:
161:
103:
86:
85:
71:Institutions
64:
671:1937 births
576:(12): 555.
222:petroglyphs
176:Walter Munk
37:Nationality
665:Categories
310:References
124:, lasers,
122:holography
590:125226212
304:Rembrandt
296:Mona Lisa
257:Mona Lisa
239:Mona Lisa
234:Mona Lisa
163:Mona Lisa
150:Rembrandt
91:physicist
298:and the
213:Florence
201:frescoes
40:American
635:26 July
203:in the
51:(Ph.D.)
611:
588:
352:p. 16.
350:Parade
180:Venice
152:, the
138:Venice
132:, and
586:S2CID
265:Xi'an
158:Xi'an
118:ORION
637:2017
609:ISBN
290:and
29:Born
578:doi
464:doi
263:in
224:in
211:in
156:in
667::
584:.
574:48
572:.
553:.
510:^
494:^
476:^
462:.
443:.
331:^
306:.
166:.
128:,
639:.
617:.
592:.
580::
557:.
470:.
466::
447:.
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.