https://community.myfitnesspal.com/zh/ Mon, 13 Apr 2026 23:58:24 +0000 zh 食品和营养 — 免费的饮食和健康论坛及聊天，免费的饮食小窍门 https://community.myfitnesspal.com/zh/discussion/1465543/estimating-calories-without-labels-is-photo-recognition-a-feasible-aid Thu, 14 Aug 2025 12:48:47 +0000 食品和营养 1193068639xcy 1465543@/zh/discussions
Studies have shown that calorie underestimation is common in these scenarios. For example, Urban et al. (American Journal of Public Health, 2013) found that people underestimated restaurant meal calories by an average of 20%–40%. This can have a meaningful impact over time for individuals managing weight or specific dietary goals.

I’ve been wondering about the role that technology could play here. In theory, image recognition combined with existing nutrition databases (e.g., USDA FoodData Central) could give a quick ballpark calorie estimate from a simple photo. While it’s unlikely to be perfect, it might help guide decisions in the moment.

From a nutrition science perspective:

What do you think are the main limitations of using photo-based calorie estimation?

Are there studies on the accuracy of visual estimation methods?

Could this approach be useful as a supplementary tool alongside traditional tracking methods?

I’d be interested in hearing any peer-reviewed research, personal experience, or professional opinion on whether photo-based calorie estimation could realistically support better dietary decision-making.]]> https://community.myfitnesspal.com/zh/discussion/1465358/%E4%B8%80%E5%A4%A9%E5%8F%AA%E5%90%83%E4%B8%80%E5%8D%8A%E5%BF%85%E8%83%9C%E5%AE%A2%E6%8A%AB%E8%90%A8%E5%92%8C%E5%85%AD%E4%B8%AA%E9%B8%A1%E7%BF%85%E5%92%8C%E4%B8%80%E4%B8%AAlava%E8%9B%8B%E7%B3%95-%E7%BA%A6%E4%B8%BA2000%E5%A4%A7%E5%8D%A1%E5%B7%A6%E5%8F%B3-%E4%BD%93%E9%87%8D%E5%8F%AF%E4%BB%A5%E4%BF%9D%E6%8C%81%E5%90%97 Wed, 11 Aug 2021 11:07:24 +0000 食品和营养 harvey107550 1465358@/zh/discussions https://community.myfitnesspal.com/zh/discussion/1465354/4%E5%A4%A9%E5%B0%8F%E5%9F%BA%E6%95%B03%E9%A1%BF%E5%95%A5%E9%83%BD%E5%90%83-%E7%98%A63%E6%96%A4 Sat, 17 Apr 2021 00:36:03 +0000 食品和营养 971989577 1465354@/zh/discussions 。瘦了的主要原因是我把酱油，辣椒酱全扔了，中餐盐太多。基本就是4天吃原型食物，每顿鸡胸吞拿鱼三文鱼，四季豆西兰花豆角，主食豌豆全麦面包等。1天1个半鸡蛋。]]> https://community.myfitnesspal.com/zh/discussion/1465349/%E5%8F%AA%E8%AE%B0%E5%BD%95%E4%B8%8D%E8%BF%90%E5%8A%A8%E4%BC%9A%E4%B8%8D%E4%BC%9A%E7%98%A6 Mon, 15 Jun 2020 00:52:18 +0000 食品和营养 ynbetty 1465349@/zh/discussions https://community.myfitnesspal.com/zh/discussion/1465207/%E9%80%B2%E8%A1%8C%E7%94%9F%E9%85%AE%E9%A3%B2%E9%A3%9F Thu, 25 Jan 2018 13:32:40 +0000 食品和营养 Dearmyrebecca 1465207@/zh/discussions https://community.myfitnesspal.com/zh/discussion/1465236/%E8%BF%9B%E5%BA%A6-%E6%A8%A1%E5%9D%97%E9%87%8C%E9%9D%A2%E5%A6%82%E4%BD%95%E6%B7%BB%E5%8A%A0%E9%80%89%E9%A1%B9 Sun, 29 Jul 2018 13:54:27 +0000 食品和营养 naruho19 1465236@/zh/discussions https://community.myfitnesspal.com/zh/discussion/1465336/%E5%90%83%E5%96%9C%E5%AE%B4%E5%90%88%E8%8F%9C%E6%99%82%E8%A6%81%E6%80%8E%E9%BA%BC%E7%99%BB%E8%A8%98 Mon, 23 Sep 2019 08:18:08 +0000 食品和营养 tp6y7m3 1465336@/zh/discussions 吃桌菜時很難有個品名
而且也不好意思秤
這時候該怎麼辦🤔]]> https://community.myfitnesspal.com/zh/discussion/1465327/%E6%80%8E%E6%A0%B7%E6%89%8D%E8%83%BD%E5%A2%9E%E5%8A%A0%E4%BD%93%E9%87%8D Fri, 02 Aug 2019 00:18:51 +0000 食品和营养 18960528630 1465327@/zh/discussions https://community.myfitnesspal.com/zh/discussion/1465328/%E6%80%8E%E6%A0%B7%E6%89%8D%E8%83%BD%E5%A2%9E%E5%8A%A0%E4%BD%93%E9%87%8D Fri, 02 Aug 2019 00:18:52 +0000 食品和营养 18960528630 1465328@/zh/discussions https://community.myfitnesspal.com/zh/discussion/1465318/%E6%B1%82%E6%8E%A8%E8%8D%90%E9%A3%9F%E8%B0%B1 Sun, 16 Jun 2019 00:51:23 +0000 食品和营养 1578692422 1465318@/zh/discussions https://community.myfitnesspal.com/zh/discussion/1465267/%E6%AC%A2%E8%BF%8E%E6%9D%A5%E5%88%B0-myfitnesspal-%E7%A4%BE%E5%8C%BA Mon, 17 Dec 2018 18:22:43 +0000 食品和营养 Betty 1465267@/zh/discussions
“食品和营养”论坛类别，是用于会员讨论饮食、节食技巧和营养建议的地方。请务必在适当的论坛上发帖; 偏离主题的内容将被删除或移动到适当的主题。

我们的主论坛和 讨论群 的运作遵循MyFitnessPal 的社区准则。我们恳请您完整地阅读该规则，以确保您发布的任何内容符合规定。请一定要礼貌和建设性地参与，或则离开而不发布任何消息。

MyFitnessPal 社群準則
]]> https://community.myfitnesspal.com/zh/discussion/1465256/%E7%94%9F%E9%85%AE%E5%8D%8A%E5%80%8B%E6%9C%88%E7%98%A64%E5%85%AC%E6%96%A4%E4%BA%86 Thu, 04 Oct 2018 14:11:56 +0000 食品和营养 anny11201215 1465256@/zh/discussions https://community.myfitnesspal.com/zh/discussion/1465241/%E5%AF%B9%E4%BA%8E%E5%A4%9A%E4%B8%8D%E9%A5%B1%E5%92%8C%E8%84%82%E8%82%AA%E4%B8%8D%E9%80%82%E7%94%A8%E7%9A%84%E4%B8%8D%E7%90%86%E8%A7%A3 Fri, 17 Aug 2018 16:06:16 +0000 食品和营养 xselent2008 1465241@/zh/discussions https://community.myfitnesspal.com/zh/discussion/1465205/%E4%BD%93%E9%87%8D%E8%BE%BE%E6%A0%87-%E4%BD%93%E8%84%82%E9%AB%98-%E5%BA%94%E8%AF%A5%E6%80%8E%E4%B9%88%E5%90%88%E7%90%86%E6%94%B9%E5%96%84%E9%A5%AE%E9%A3%9F Fri, 19 Jan 2018 01:11:28 +0000 食品和营养 4690456 1465205@/zh/discussions https://community.myfitnesspal.com/zh/discussion/1465222/%E9%A3%B2%E9%A3%B2%E9%A3%9F%E9%A3%9F Sun, 22 Apr 2018 10:41:15 +0000 食品和营养 11onle 1465222@/zh/discussions 健康身心]]> https://community.myfitnesspal.com/zh/discussion/1465186/%E6%B8%85%E8%B0%83%E8%A1%A5%E5%81%A5%E5%BA%B7%E7%AE%A1%E7%90%86 Sun, 15 Oct 2017 04:34:18 +0000 食品和营养 phnic 1465186@/zh/discussions 健康管理]]> https://community.myfitnesspal.com/zh/discussion/1465159/%E6%AF%8F%E5%A4%A9%E6%91%84%E5%8F%96%E5%B0%91%E8%BF%871400%E5%8D%A1 Wed, 31 May 2017 13:03:59 +0000 食品和营养 P_Kangaroo 1465159@/zh/discussions 我不是不要吃， 是我吃不了那么多
女，165cm,60kg,平时喜欢健身]]>