{"id":13069,"date":"2024-08-11T08:41:43","date_gmt":"2024-08-11T08:41:43","guid":{"rendered":"https:\/\/dgzx.hk?p=13069"},"modified":"2024-08-18T08:46:40","modified_gmt":"2024-08-18T08:46:40","slug":"ov7725-camera-chip-image-sensor","status":"publish","type":"post","link":"https:\/\/dgzx.hk\/vi\/cam-bien-hinh-anh-chip-camera-ov7725\/","title":{"rendered":"C\u1ea3m bi\u1ebfn h\u00ecnh \u1ea3nh Chip Camera OV7725"},"content":{"rendered":"

        C\u00e1c OV7725<\/span> C\u1ea3m bi\u1ebfn h\u00ecnh \u1ea3nh Camera\u2122 l\u00e0 thi\u1ebft b\u1ecb CMOS \u0111i\u1ec7n \u00e1p th\u1ea5p cung c\u1ea5p \u0111\u1ea7y \u0111\u1ee7 ch\u1ee9c n\u0103ng c\u1ee7a camera VGA m\u1ed9t chip v\u00e0 b\u1ed9 x\u1eed l\u00fd h\u00ecnh \u1ea3nh trong m\u1ed9t g\u00f3i nh\u1ecf. OV7725 \u0111\u01b0\u1ee3c \u0111i\u1ec1u khi\u1ec3n th\u00f4ng qua giao di\u1ec7n bus \u0111i\u1ec1u khi\u1ec3n camera n\u1ed1i ti\u1ebfp (SCCB) v\u00e0 cung c\u1ea5p h\u00ecnh \u1ea3nh 8-bit\/10-bit to\u00e0n khung, l\u1ea5y m\u1eabu ph\u1ee5 ho\u1eb7c c\u00f3 c\u1eeda s\u1ed5 \u1edf nhi\u1ec1u \u0111\u1ecbnh d\u1ea1ng.<\/span><\/p>\n

Thi\u1ebft b\u1ecb c\u00f3 m\u1ed9t m\u1ea3ng h\u00ecnh \u1ea3nh ch\u1ea1y \u1edf t\u1ed1c \u0111\u1ed9 60 khung h\u00ecnh\/gi\u00e2y (fps) \u1edf VGA, v\u1edbi kh\u1ea3 n\u0103ng ki\u1ec3m so\u00e1t ho\u00e0n to\u00e0n ch\u1ea5t l\u01b0\u1ee3ng h\u00ecnh \u1ea3nh, \u0111\u1ecbnh d\u1ea1ng v\u00e0 truy\u1ec1n d\u1eef li\u1ec7u \u0111\u1ea7u ra c\u1ee7a ng\u01b0\u1eddi d\u00f9ng. T\u1ea5t c\u1ea3 c\u00e1c ch\u1ee9c n\u0103ng x\u1eed l\u00fd h\u00ecnh \u1ea3nh c\u1ea7n thi\u1ebft, bao g\u1ed3m ki\u1ec3m so\u00e1t ph\u01a1i s\u00e1ng, gamma, c\u00e2n b\u1eb1ng tr\u1eafng, \u0111\u1ed9 b\u00e3o h\u00f2a m\u00e0u, ki\u1ec3m so\u00e1t s\u1eafc th\u00e1i, v.v.<\/span><\/p>\n

\u0110\u1eb7c tr\u01b0ng:<\/span><\/strong><\/p>\n

\u0110\u1ed9 nh\u1ea1y cao cho ho\u1ea1t \u0111\u1ed9ng thi\u1ebfu s\u00e1ng<\/span><\/p>\n

Giao di\u1ec7n SCCB ti\u00eau chu\u1ea9n<\/span><\/p>\n

H\u1ed7 tr\u1ee3 \u0111\u1ea7u ra cho c\u00e1c \u0111\u1ecbnh d\u1ea1ng RGB th\u00f4, RGB (GRB 4:2:2, RGB565\/555\/444) v\u00e0 YCbCr (4:2:2)<\/span><\/p>\n

H\u1ed7 tr\u1ee3 k\u00edch th\u01b0\u1edbc h\u00ecnh \u1ea3nh: VGA, QVGA v\u00e0 b\u1ea5t k\u1ef3 k\u00edch th\u01b0\u1edbc n\u00e0o t\u1eeb CIF xu\u1ed1ng \u0111\u1ebfn 40\u00d730<\/span><\/p>\n

C\u00e1c ch\u1ee9c n\u0103ng \u0111i\u1ec1u khi\u1ec3n h\u00ecnh \u1ea3nh t\u1ef1 \u0111\u1ed9ng, bao g\u1ed3m: \u0111i\u1ec1u khi\u1ec3n ph\u01a1i s\u00e1ng t\u1ef1 \u0111\u1ed9ng (AEC), \u0111i\u1ec1u khi\u1ec3n \u0111\u1ed9 khu\u1ebfch \u0111\u1ea1i t\u1ef1 \u0111\u1ed9ng (AGC), c\u00e2n b\u1eb1ng tr\u1eafng t\u1ef1 \u0111\u1ed9ng (AWB), b\u1ed9 l\u1ecdc th\u00f4ng d\u1ea3i t\u1ef1 \u0111\u1ed9ng (ABF) v\u00e0 hi\u1ec7u chu\u1ea9n m\u1ee9c \u0111en t\u1ef1 \u0111\u1ed9ng (ABLC)<\/span><\/p>\n

Ki\u1ec3m so\u00e1t ch\u1ea5t l\u01b0\u1ee3ng h\u00ecnh \u1ea3nh, bao g\u1ed3m \u0111\u1ed9 b\u00e3o h\u00f2a m\u00e0u, s\u1eafc \u0111\u1ed9, gamma, \u0111\u1ed9 s\u1eafc n\u00e9t (t\u0103ng c\u01b0\u1eddng c\u1ea1nh) v\u00e0 ch\u1ed1ng nhi\u1ec5u t\u00edn hi\u1ec7u<\/span><\/p>\n

ISP bao g\u1ed3m gi\u1ea3m nhi\u1ec5u v\u00e0 hi\u1ec7u ch\u1ec9nh l\u1ed7i<\/span><\/p>\n

Hi\u1ec7u ch\u1ec9nh b\u00f3ng \u1ed1ng k\u00ednh<\/span><\/p>\n

T\u1ef1 \u0111\u1ed9ng \u0111i\u1ec1u ch\u1ec9nh m\u1ee9c \u0111\u1ed9 b\u00e3o h\u00f2a (\u0111i\u1ec1u ch\u1ec9nh UV)<\/span><\/p>\n

T\u1ef1 \u0111\u1ed9ng \u0111i\u1ec1u ch\u1ec9nh m\u1ee9c \u0111\u1ed9 t\u0103ng c\u01b0\u1eddng c\u1ea1nh<\/span><\/p>\n

T\u1ef1 \u0111\u1ed9ng \u0111i\u1ec1u ch\u1ec9nh m\u1ee9c \u0111\u1ed9 gi\u1ea3m ti\u1ebfng \u1ed3n<\/span><\/p>\n

Kh\u1ea3 n\u0103ng \u0111\u1ed3ng b\u1ed9 khung<\/span><\/p>\n

Dogoozx OV7725<\/span> Khuy\u1ebfn ngh\u1ecb v\u1ec1 m\u00f4-\u0111un m\u00e1y \u1ea3nh:<\/span><\/span><\/p>\n

\"OV7725<\/p>\n

<\/p>\n

M\u00f4-\u0111un camera USB g\u00f3c r\u1ed9ng 120 \u0111\u1ed9 Dogoozx Free Drive OV7725 480p<\/span><\/a><\/p>\n

<\/p>\n

\"OV7725<\/p>\n

M\u00f4-\u0111un camera nh\u1eadn d\u1ea1ng khu\u00f4n m\u1eb7t DVP OV7725 0,3MP VGA 60fps ISP \u00e1nh s\u00e1ng y\u1ebfu Dogoozx<\/span><\/a><\/p>\n

<\/p>\n

\"OV7725<\/p>\n

Dogoozx OV7725 v\u1edbi ISP YUV VGA Nh\u1eadn d\u1ea1ng \u1ea3nh g\u00f3c h\u1eb9p ti\u00eau c\u1ef1 d\u00e0i M\u00f4-\u0111un camera<\/span><\/a><\/p>\n

<\/p>\n

<\/p>\n

\"OV7725<\/p>\n

Dogoozx VAG v\u1edbi ISP YUV 60fps Qu\u00e9t m\u00e3 ki\u1ec3m so\u00e1t truy c\u1eadp kh\u00e1ch OV7725 M\u00f4-\u0111un camera DVP<\/span><\/a><\/p>\n

<\/p>\n

\"OV7725<\/p>\n

Dogoozx VGA 0.3MP 480P 60fps ov7725 1\/4 cmos ti\u00eau c\u1ef1 c\u1ed1 \u0111\u1ecbnh qu\u00e9t m\u00e3 DVP m\u00f4-\u0111un camera<\/span><\/a><\/p>\n

<\/p>","protected":false},"excerpt":{"rendered":"

        The OV7725 Camera\u2122 image sensor is a low-voltage CMOS device that provides the full functionality of a single-chip VGA camera and image processor in a small package. The OV7725 is controlled via a serial camera control bus (SCCB) interface and provides full-frame, subsampled or windowed 8-bit\/10-bit images in multiple formats. The device has an image array that runs at 60 frames per second (fps) in VGA, with full user control over image quality, format and output data transmission. All necessary image processing functions, including exposure control, gamma, white balance, color saturation, hue control, etc. Features: High sensitivity for low light operation Standard SCCB interface Output support for raw RGB, RGB (GRB 4:2:2, RGB565\/555\/444) and YCbCr (4:2:2) formats Support image sizes: VGA, QVGA and any size from CIF down to 40\u00d730 Automatic image control functions, including: automatic exposure control (AEC), automatic gain control (AGC), automatic white balance (AWB), automatic bandpass filter (ABF) and automatic black level calibration (ABLC) Image quality control, including color saturation, hue, gamma, sharpness (edge enhancement) and anti-signal interference ISP includes noise reduction and defect correction Lens shading correction Automatic adjustment of saturation level (UV adjustment) Automatic adjustment of edge enhancement level Automatic adjustment of noise reduction level Frame synchronization capability Dogoozx OV7725 camera module recommendation: Dogoozx Free Drive OV7725 480p Wide Angle 120 degree USB Camera Module Dogoozx High-end OV7725 0.3MP VGA 60fps ISP Low Light DVP Face Recognition Camera Module Dogoozx OV7725 with ISP YUV VGA Long focal narrow angle photo recognition Camera Module Dogoozx VAG with ISP YUV 60fps Scan Code visitor access control OV7725 DVP camera module Dogoozx VGA 0.3MP 480P 60fps ov7725 1\/4 cmos fixed focus scan code DVP camera module<\/p>","protected":false},"author":5,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_eb_attr":"","footnotes":""},"categories":[622],"tags":[],"class_list":["post-13069","post","type-post","status-publish","format-standard","hentry","category-0-3mp-480p-camera-sensor"],"_links":{"self":[{"href":"https:\/\/dgzx.hk\/vi\/wp-json\/wp\/v2\/posts\/13069","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/dgzx.hk\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/dgzx.hk\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/dgzx.hk\/vi\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/dgzx.hk\/vi\/wp-json\/wp\/v2\/comments?post=13069"}],"version-history":[{"count":0,"href":"https:\/\/dgzx.hk\/vi\/wp-json\/wp\/v2\/posts\/13069\/revisions"}],"wp:attachment":[{"href":"https:\/\/dgzx.hk\/vi\/wp-json\/wp\/v2\/media?parent=13069"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/dgzx.hk\/vi\/wp-json\/wp\/v2\/categories?post=13069"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/dgzx.hk\/vi\/wp-json\/wp\/v2\/tags?post=13069"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}