OV7740出现水波纹，请教如何设置？

wb4916

OV7740出现水波纹，请教如何设置？

使用ACD See顺序查看图片的时候，条纹明显。使用的主控是ARM11：SSD1938，XCLK=12MHz。寄存器的配置参数是从网上找到的，然后自行修改为60fps了。




/ const static struct ov7740_reg ov7740_vga_set[] = {
struct ov7740_reg ov7740_vga_set[] = {
//QXGA -> XGA
// OV7740 YCbCr VGA (640x480)
// 30fps at 24MHz input clock, 16x gain ceiling
// Version: R-2
// Date: 05/19/2010

{0x12, 0x80},
{0x13, 0x00},

// {0x11, 0x01}, //00/01/03/07 for 60/30/15/7.5fps
{0x11, 0x00},
// {0x11, 0x01},
{0x55, 0xC0},

{0x12, 0x00},
{0xd5, 0x10},
{0x0c, 0x12},
{0x0d, 0x34},
{0x17, 0x25},
{0x18, 0xa0},
{0x19, 0x03},
{0x1a, 0xf0},
{0x1b, 0x89},
{0x1e, 0x13},
{0x22, 0x03},
{0x29, 0x17},
{0x2b, 0xf8},
{0x2c, 0x01},
{0x31, 0xa0},
{0x32, 0xf0},
{0x33, 0xc4},

// {0x3a, 0xb4}, //<= 30fps //42 35 05 //60fps
{0x35, 0x05},

{0x36, 0x3f},

{0x04, 0x60},
{0x27, 0x80},
// {0x3d, 0x0f}, //08/0f/0f/0f for 60/30/15/7.5fps
{0x3d, 0x08},

{0x3e, 0x82},
{0x3f, 0x40},
{0x40, 0x7f},
{0x41, 0x6a},
{0x42, 0x29},
// {0x44, 0xe5}, //f5/e5/e5/e5 for 60/30/15/7.5fps
{0x44, 0xf5},

{0x45, 0x41},
{0x47, 0x42},
{0x48, 0x00},
{0x49, 0x61},
{0x4a, 0xa1},
{0x4b, 0x46},
{0x4c, 0x18},
{0x4d, 0x50},
{0x4e, 0x13},
{0x64, 0x00},
{0x67, 0x88},
{0x68, 0x1a},

{0x14, 0x38},
{0x24, 0x3c},
{0x25, 0x30},
{0x26, 0x72},

// {0x50, 0x97}, //2e/97/4c/26 for 60/30/15/7.5fps
{0x50, 0x2e},
// {0x51, 0x7e}, //fc/7e/3f/20 for 60/30/15/7.5fps
{0x51, 0xfc},
// {0x52, 0x00}, //10/00/00/00 for 60/30/15/7.5fps
{0x52, 0x10},

{0x53, 0x00},
{0x20, 0x00},
// {0x21, 0x23}, //01/23/57/cf for 60/30/15/7.5fps
{0x21, 0x01},

{0x38, 0x14},
{0xe9, 0x00},
{0x56, 0x55},
{0x57, 0xff},
{0x58, 0xff},
{0x59, 0xff},
{0x5f, 0x04},
// {0x13, 0xff},

{0x80, 0x7d},
{0x81, 0x3f},
{0x82, 0x32},
{0x83, 0x03},
{0x38, 0x11},
{0x84, 0x70},
{0x85, 0x00},
{0x86, 0x03},
{0x87, 0x01},
{0x88, 0x05},
{0x89, 0x30},
{0x8d, 0x30},
{0x8f, 0x85},
{0x93, 0x30},
{0x95, 0x85},
{0x99, 0x30},
{0x9b, 0x85},

{0x9c, 0x08},
{0x9d, 0x12},
{0x9e, 0x23},
{0x9f, 0x45},
{0xa0, 0x55},
{0xa1, 0x64},
{0xa2, 0x72},
{0xa3, 0x7f},
{0xa4, 0x8b},
{0xa5, 0x95},
{0xa6, 0xa7},
{0xa7, 0xb5},
{0xa8, 0xcb},
{0xa9, 0xdd},
{0xaa, 0xec},
{0xab, 0x1a},

{0xce, 0x78},
{0xcf, 0x6e},
{0xd0, 0x0a},
{0xd1, 0x0c},
{0xd2, 0x84},
{0xd3, 0x90},
{0xd4, 0x1e},

{0x5a, 0x24},
{0x5b, 0x1f},
{0x5c, 0x88},
{0x5d, 0x60},

{0xac, 0x6e},
{0xbe, 0xff},
{0xbf, 0x00},

//50/60Hz auto detection is XCLK dependent
//the following is based on XCLK = 24MHz
{0x70, 0x00},
{0x71, 0x34},
{0x74, 0x28},
{0x75, 0x98},
{0x76, 0x00},
{0x77, 0x08},
{0x78, 0x01},
{0x79, 0xc2},
{0x7d, 0x02},
{0x7a, 0x9c},
{0x7b, 0x40},
{0xec, 0x02}, //02/82 for manual/auto
{0x7c, 0x0c},

// {0x00, 0xFF},
// {0x00, 0xEF},
// {0x00, 0xCF},

// {0x00, 0xB0},

// {0x00, 0x80},
// {0x00, 0x0F},
// {0x14, 0x48},




// 2012-11-16 04:46下午 偏色设置
{0x01, 0x40},
{0x02, 0x48},
{0x03, 0x30},

{0x00, 0xFF},

// {0x13, 0xFF},
};<img src="attachments/dvbbs/2013-1/2013126107529828.jpg" border="0" onclick="zoom(this)" onload="if(this.width>document.body.clientWidth*0.5) {this.resized=true;this.width=document.body.clientWidth*0.5;this.style.cursor='pointer';} else {this.onclick=null}" alt="" />
<img src="attachments/dvbbs/2013-1/20131261071035102.jpg" border="0" onclick="zoom(this)" onload="if(this.width>document.body.clientWidth*0.5) {this.resized=true;this.width=document.body.clientWidth*0.5;this.style.cursor='pointer';} else {this.onclick=null}" alt="" />
<img src="attachments/dvbbs/2013-1/20131261071596938.jpg" border="0" onclick="zoom(this)" onload="if(this.width>document.body.clientWidth*0.5) {this.resized=true;this.width=document.body.clientWidth*0.5;this.style.cursor='pointer';} else {this.onclick=null}" alt="" />
<img src="attachments/dvbbs/2013-1/20131261072254999.jpg" border="0" onclick="zoom(this)" onload="if(this.width>document.body.clientWidth*0.5) {this.resized=true;this.width=document.body.clientWidth*0.5;this.style.cursor='pointer';} else {this.onclick=null}" alt="" />
<img src="attachments/dvbbs/2013-1/20131261072613822.jpg" border="0" onclick="zoom(this)" onload="if(this.width>document.body.clientWidth*0.5) {this.resized=true;this.width=document.body.clientWidth*0.5;this.style.cursor='pointer';} else {this.onclick=null}" alt="" />
<img src="attachments/dvbbs/2013-1/20131261073023600.jpg" border="0" onclick="zoom(this)" onload="if(this.width>document.body.clientWidth*0.5) {this.resized=true;this.width=document.body.clientWidth*0.5;this.style.cursor='pointer';} else {this.onclick=null}" alt="" />
<img src="attachments/dvbbs/2013-1/20131261073580141.jpg" border="0" onclick="zoom(this)" onload="if(this.width>document.body.clientWidth*0.5) {this.resized=true;this.width=document.body.clientWidth*0.5;this.style.cursor='pointer';} else {this.onclick=null}" alt="" />
<img src="attachments/dvbbs/2013-1/20131261073963081.jpg" border="0" onclick="zoom(this)" onload="if(this.width>document.body.clientWidth*0.5) {this.resized=true;this.width=document.body.clientWidth*0.5;this.style.cursor='pointer';} else {this.onclick=null}" alt="" />
<img src="attachments/dvbbs/2013-1/20131261074350211.jpg" border="0" onclick="zoom(this)" onload="if(this.width>document.body.clientWidth*0.5) {this.resized=true;this.width=document.body.clientWidth*0.5;this.style.cursor='pointer';} else {this.onclick=null}" alt="" />
<img src="attachments/dvbbs/2013-1/20131261074787767.jpg" border="0" onclick="zoom(this)" onload="if(this.width>document.body.clientWidth*0.5) {this.resized=true;this.width=document.body.clientWidth*0.5;this.style.cursor='pointer';} else {this.onclick=null}" alt="" />

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176051264

改banding filter就好了

hl19901119

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flytimes

改好没？没下文了？banding filter是啥？