The unseeded Dane produced one of the performances of his career as he wrapped up a 21-16, 14-21, 21-16 triumph at the Istora Gelora Bung Karno, the venue for badminton competition at last year's Asian Games.

"It's an iconic place that we always talk about in Denmark," said Antonsen.

"It's absolutely crazy to win my first BWF World Tour Super 500.

"I was six when I started playing badminton and I was always dreaming about winning one of these titles. 

"So it's crazy, finally I've done it. 

"And it's my first major. 

"I can't even describe how it feels."

The women's singles final ended in disaster for reigning Olympic, world and European champion Carolina Marin of Spain as she was forced to retire after collapsing in pain with a right knee injury during her contest with India's Saina Nehwal.

Marin led 10-4 in the opening game when the incident occurred, bringing a premature end to the contest.

"It's not good to see at all," said Nehwal.

"I've been getting injured for the last two-three years, and to see something like this happen is very painful."

Second seeds Misaki Matsutomo and Ayaka Takahashi of Japan won the women's doubles crown as they beat South Korea's Kim So-yeong and Kong Hee-yong 21-19, 21-15.

Indonesia were guaranteed home success in the mixed doubles as top seeds Marcus Gideon and Kevin Sukamuljo took on Mohammad Ahsan and Hendra Setiawan.

Gideon and Sukamuljo justified their billing as the number one seeds with a 21-17, 21-11 victory.

The mixed doubles final also followed the form book as Zheng Siwei and Huang Yaqiong of China defeated Indonesia's Tontowi Ahmad and Liliyana Natsir 19-21, 21-19, 21-16.