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mask；提示增加信息，但不必天然消除所有歧义。","sha256":"56e7c036b4f4f45007a9bb867592b5303af825844c50e015a082b7a5ff5f8446","chapter":{"id":"course","title":"提示指定本次目标，训练学会响应提示"},"unit":{"id":"notebook-blocks/fd0dc77671064e8ab452f36d817bc71b","title":"提示指定本次目标，训练学会响应提示"},"page":{"id":"reading-opening","title":"提示指定本次目标，训练学会响应提示","number":1},"sectionTitle":"提示指定本次目标，训练学会响应提示","currentQuestion":"提示指定本次目标，训练学会响应提示","sourceSlides":[],"knowledgeBlock":null,"formulas":[],"previousBlock":"b-0c13cc029ee0f99129d210c8","nextBlock":"b-ef6742f5368629c281fdad04","prerequisites":[{"id":"b-0c13cc029ee0f99129d210c8","url":"#b-0c13cc029ee0f99129d210c8","role":"section-title"},{"id":"b-ee158f8c8314a8ea24ef4ba9","url":"#b-ee158f8c8314a8ea24ef4ba9","role":"problem-context"}],"relatedBlocks":[]},{"id":"b-ef6742f5368629c281fdad04","type":"p","scope":"document","url":"https://codingai-lec03.pages.dev/course/notebook-blocks/fd0dc77671064e8ab452f36d817bc71b.html#b-ef6742f5368629c281fdad04","content":"几何提示可以分工：正点表示希望包含的位置，负点表示希望排除的位置，框给出大致区域，已有 mask 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SAM 将图像编码、提示编码和 mask 解码分开。同一图像的较重表示可缓存，用户改点、改框时重复较轻的后半段。它也能为模糊提示给出多个 mask 与估计质量，从而容纳“部分还是整体”的不同解释。","sha256":"0477ef728ef80f0e9c50f2e6e04b9240e3247b8ec2e7d94d69df73c5cb655bef","chapter":{"id":"course","title":"提示指定本次目标，训练学会响应提示"},"unit":{"id":"notebook-blocks/fd0dc77671064e8ab452f36d817bc71b","title":"提示指定本次目标，训练学会响应提示"},"page":{"id":"reading-opening","title":"提示指定本次目标，训练学会响应提示","number":1},"sectionTitle":"提示指定本次目标，训练学会响应提示","currentQuestion":"提示指定本次目标，训练学会响应提示","sourceSlides":[],"knowledgeBlock":null,"formulas":[],"previousBlock":"b-ef6742f5368629c281fdad04","nextBlock":"b-bbd71ec773a7411ef6891c5a","prerequisites":[{"id":"b-0c13cc029ee0f99129d210c8","url":"#b-0c13cc029ee0f99129d210c8","role":"section-title"},{"id":"b-ee158f8c8314a8ea24ef4ba9","url":"#b-ee158f8c8314a8ea24ef4ba9","role":"problem-context"}],"relatedBlocks":[]},{"id":"b-bbd71ec773a7411ef6891c5a","type":"p","scope":"document","url":"https://codingai-lec03.pages.dev/course/notebook-blocks/fd0dc77671064e8ab452f36d817bc71b.html#b-bbd71ec773a7411ef6891c5a","content":"本页教学图显示提示与目标的对应关系；若要评价模型，应保存真正返回的 mask，并先约定期望的对象粒度。用户给一个点后显示手工真值，不能替代推理证据。LAB 16 目前保留的是确定性颜色/连通域规则，适合比较接口，不冒充 SAM 权重推理。","sha256":"3ab59c7ac0c844366f525ff129aa8a1133bc3f0501d18d73a801db127544fa1e","chapter":{"id":"course","title":"提示指定本次目标，训练学会响应提示"},"unit":{"id":"notebook-blocks/fd0dc77671064e8ab452f36d817bc71b","title":"提示指定本次目标，训练学会响应提示"},"page":{"id":"reading-opening","title":"提示指定本次目标，训练学会响应提示","number":1},"sectionTitle":"提示指定本次目标，训练学会响应提示","currentQuestion":"提示指定本次目标，训练学会响应提示","sourceSlides":[],"knowledgeBlock":null,"formulas":[],"previousBlock":"b-aea595741b0a96a5a6a752e2","nextBlock":"b-5bbf2a4d0a92ca455117daa3","prerequisites":[{"id":"b-0c13cc029ee0f99129d210c8","url":"#b-0c13cc029ee0f99129d210c8","role":"section-title"},{"id":"b-ee158f8c8314a8ea24ef4ba9","url":"#b-ee158f8c8314a8ea24ef4ba9","role":"problem-context"}],"relatedBlocks":[]},{"id":"b-5bbf2a4d0a92ca455117daa3","type":"p","scope":"document","url":"https://codingai-lec03.pages.dev/course/notebook-blocks/fd0dc77671064e8ab452f36d817bc71b.html#b-5bbf2a4d0a92ca455117daa3","content":"原始 SAM 的图像编码器使用 MAE 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mask”的全部监督。后续还要进行提示式分割训练。","sha256":"d81be8895ad7921895d1f461f04b87ae6a1812cacfdfd8bae29397181d035b00","chapter":{"id":"course","title":"提示指定本次目标，训练学会响应提示"},"unit":{"id":"notebook-blocks/fd0dc77671064e8ab452f36d817bc71b","title":"提示指定本次目标，训练学会响应提示"},"page":{"id":"reading-opening","title":"提示指定本次目标，训练学会响应提示","number":1},"sectionTitle":"提示指定本次目标，训练学会响应提示","currentQuestion":"提示指定本次目标，训练学会响应提示","sourceSlides":[],"knowledgeBlock":null,"formulas":[],"previousBlock":"b-bbd71ec773a7411ef6891c5a","nextBlock":"b-39540cf86809d0ed81285e56","prerequisites":[{"id":"b-0c13cc029ee0f99129d210c8","url":"#b-0c13cc029ee0f99129d210c8","role":"section-title"},{"id":"b-ee158f8c8314a8ea24ef4ba9","url":"#b-ee158f8c8314a8ea24ef4ba9","role":"problem-context"}],"relatedBlocks":[]},{"id":"b-39540cf86809d0ed81285e56","type":"p","scope":"document","url":"https://codingai-lec03.pages.dev/course/notebook-blocks/fd0dc77671064e8ab452f36d817bc71b.html#b-39540cf86809d0ed81285e56","content":"训练样本包含图像、目标 mask 与模拟提示。模型预测后，可以从错误区域追加正点或负点，再要求它修正；原论文训练模拟每个 mask 的多轮交互，掩码损失组合 focal 与 dice。这样，推理时的“改点、改框”对应训练中学过的任务，而不是凭空获得一个通用按钮。","sha256":"67b3d3c3aad52c0d80e2601a93b15e852b3304b341f8f30e0eaa71ce59012241","chapter":{"id":"course","title":"提示指定本次目标，训练学会响应提示"},"unit":{"id":"notebook-blocks/fd0dc77671064e8ab452f36d817bc71b","title":"提示指定本次目标，训练学会响应提示"},"page":{"id":"reading-opening","title":"提示指定本次目标，训练学会响应提示","number":1},"sectionTitle":"提示指定本次目标，训练学会响应提示","currentQuestion":"提示指定本次目标，训练学会响应提示","sourceSlides":[],"knowledgeBlock":null,"formulas":[],"previousBlock":"b-5bbf2a4d0a92ca455117daa3","nextBlock":"b-630fcdd45ebf3e0f5fc13310","prerequisites":[{"id":"b-0c13cc029ee0f99129d210c8","url":"#b-0c13cc029ee0f99129d210c8","role":"section-title"},{"id":"b-ee158f8c8314a8ea24ef4ba9","url":"#b-ee158f8c8314a8ea24ef4ba9","role":"problem-context"}],"relatedBlocks":[]},{"id":"b-630fcdd45ebf3e0f5fc13310","type":"p","scope":"document","url":"https://codingai-lec03.pages.dev/course/notebook-blocks/fd0dc77671064e8ab452f36d817bc71b.html#b-630fcdd45ebf3e0f5fc13310","content":"数据组织也属于能力来源。SA-1B 来自模型辅助标注、半自动补充、全自动生成的逐步演进，最终收集约 1100 万张图像与 11 亿个 mask。这里的数据单位是区域轮廓，并非现成的图文语句对。","sha256":"288b13fb11a7b4bf50ae1b07b0d59fe594cb1b283e580e44cb03d1c60f4dcdf6","chapter":{"id":"course","title":"提示指定本次目标，训练学会响应提示"},"unit":{"id":"notebook-blocks/fd0dc77671064e8ab452f36d817bc71b","title":"提示指定本次目标，训练学会响应提示"},"page":{"id":"reading-opening","title":"提示指定本次目标，训练学会响应提示","number":1},"sectionTitle":"提示指定本次目标，训练学会响应提示","currentQuestion":"提示指定本次目标，训练学会响应提示","sourceSlides":[],"knowledgeBlock":null,"formulas":[],"previousBlock":"b-39540cf86809d0ed81285e56","nextBlock":"b-64be03d93ef78cc8187628d2","prerequisites":[{"id":"b-0c13cc029ee0f99129d210c8","url":"#b-0c13cc029ee0f99129d210c8","role":"section-title"},{"id":"b-ee158f8c8314a8ea24ef4ba9","url":"#b-ee158f8c8314a8ea24ef4ba9","role":"problem-context"}],"relatedBlocks":[]},{"id":"b-64be03d93ef78cc8187628d2","type":"p","scope":"document","url":"https://codingai-lec03.pages.dev/course/notebook-blocks/fd0dc77671064e8ab452f36d817bc71b.html#b-64be03d93ef78cc8187628d2","content":"预训练参数、任务监督和使用接口可以分别复用：先以自监督表示为起点，再学习图像/提示到掩码，使用时缓存同图表示。如果只说“MAE 会补图所以自然会分割”，就跳过了任务训练这一关键桥梁。注意此处是原始 SAM；文字提示在论文中有另行探索，不等于公开几何提示 checkpoint 默认已具备任意语言理解。","sha256":"d09830d2ab723a8ef4a85da99e5bb96bc3f95fcd6e26eeaad7e1b354c766da11","chapter":{"id":"course","title":"提示指定本次目标，训练学会响应提示"},"unit":{"id":"notebook-blocks/fd0dc77671064e8ab452f36d817bc71b","title":"提示指定本次目标，训练学会响应提示"},"page":{"id":"reading-opening","title":"提示指定本次目标，训练学会响应提示","number":1},"sectionTitle":"提示指定本次目标，训练学会响应提示","currentQuestion":"提示指定本次目标，训练学会响应提示","sourceSlides":[],"knowledgeBlock":null,"formulas":[],"previousBlock":"b-630fcdd45ebf3e0f5fc13310","nextBlock":"b-5e6cfcaf65d26579efb412c7","prerequisites":[{"id":"b-0c13cc029ee0f99129d210c8","url":"#b-0c13cc029ee0f99129d210c8","role":"section-title"},{"id":"b-ee158f8c8314a8ea24ef4ba9","url":"#b-ee158f8c8314a8ea24ef4ba9","role":"problem-context"}],"relatedBlocks":[]},{"id":"b-5e6cfcaf65d26579efb412c7","type":"p","scope":"document","url":"https://codingai-lec03.pages.dev/course/notebook-blocks/fd0dc77671064e8ab452f36d817bc71b.html#b-5e6cfcaf65d26579efb412c7","content":"[LAB 16 规则基线的准确身份](/course/blocks/sam-rule-baseline-explained.html) · [原始 SAM §2–4](https://arxiv.org/html/2304.02643v1)","sha256":"70f0ee38f06f5c83fff8021ab80296be4bd08fb7eee85c5e76b690e4a5f0e055","chapter":{"id":"course","title":"提示指定本次目标，训练学会响应提示"},"unit":{"id":"notebook-blocks/fd0dc77671064e8ab452f36d817bc71b","title":"提示指定本次目标，训练学会响应提示"},"page":{"id":"reading-opening","title":"提示指定本次目标，训练学会响应提示","number":1},"sectionTitle":"提示指定本次目标，训练学会响应提示","currentQuestion":"提示指定本次目标，训练学会响应提示","sourceSlides":[],"knowledgeBlock":null,"formulas":[],"previousBlock":"b-64be03d93ef78cc8187628d2","nextBlock":null,"prerequisites":[{"id":"b-0c13cc029ee0f99129d210c8","url":"#b-0c13cc029ee0f99129d210c8","role":"section-title"},{"id":"b-ee158f8c8314a8ea24ef4ba9","url":"#b-ee158f8c8314a8ea24ef4ba9","role":"problem-context"}],"relatedBlocks":[]}]}